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381211000011001 = 419297829268561
BaseRepresentation
bin101011010101101011001101…
…0001111010111100011111001
31211222202102020000222011210101
41112223112122033113203321
5344431230112000323001
63430433525445515401
7143203404645063406
oct12653263217274371
91758672200864711
10381211000011001
1110051374a3a0836
12369092b4712b61
1313493073781384
146a1c9d47c92ad
152e1128da25a01
hex15ab59a3d78f9

381211000011001 has 4 divisors (see below), whose sum is σ = 390508829279604. Its totient is φ = 371913170742400.

The previous prime is 381211000010987. The next prime is 381211000011007. The reversal of 381211000011001 is 100110000112183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75352035108025 + 305858964902976 = 8680555^2 + 17488824^2 .

It is a cyclic number.

It is not a de Polignac number, because 381211000011001 - 221 = 381210997913849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381211000011001.

It is not an unprimeable number, because it can be changed into a prime (381211000011007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4648914634240 + ... + 4648914634321.

It is an arithmetic number, because the mean of its divisors is an integer number (97627207319901).

Almost surely, 2381211000011001 is an apocalyptic number.

It is an amenable number.

381211000011001 is a deficient number, since it is larger than the sum of its proper divisors (9297829268603).

381211000011001 is an equidigital number, since it uses as much as digits as its factorization.

381211000011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9297829268602.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 381211000011001 its reverse (100110000112183), we get a palindrome (481321000123184).

The spelling of 381211000011001 in words is "three hundred eighty-one trillion, two hundred eleven billion, eleven thousand, one".

Divisors: 1 41 9297829268561 381211000011001