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512215000441 = 3989128406869
BaseRepresentation
bin1110111010000100110…
…01001010010101111001
31210222010010220000202021
413131002121022111321
531343004020003231
61031150333034441
752002110444464
oct7350231122571
91728103800667
10512215000441
11188258018091
128332b925a21
13393bc9bc4a1
141ab1160a2db
15d4cd1c2811
hex774264a579

512215000441 has 4 divisors (see below), whose sum is σ = 512343411300. Its totient is φ = 512086589584.

The previous prime is 512215000433. The next prime is 512215000447. The reversal of 512215000441 is 144000512215.

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 260070420841 + 252144579600 = 509971^2 + 502140^2 .

It is a cyclic number.

It is not a de Polignac number, because 512215000441 - 23 = 512215000433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512215000447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64199446 + ... + 64207423.

It is an arithmetic number, because the mean of its divisors is an integer number (128085852825).

Almost surely, 2512215000441 is an apocalyptic number.

It is an amenable number.

512215000441 is a deficient number, since it is larger than the sum of its proper divisors (128410859).

512215000441 is a wasteful number, since it uses less digits than its factorization.

512215000441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128410858.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 512215000441 its reverse (144000512215), we get a palindrome (656215512656).

The spelling of 512215000441 in words is "five hundred twelve billion, two hundred fifteen million, four hundred forty-one", and thus it is an aban number.

Divisors: 1 3989 128406869 512215000441