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1075865633681 = 9950231081247
BaseRepresentation
bin11111010011111101001…
…01101100001110010001
310210211222220222221002112
433221332211230032101
5120111333100234211
62142125034155105
7140504644666346
oct17517645541621
93724886887075
101075865633681
113852aa114403
12154615282a95
137a5b89c4c47
143a1020927cd
151cebbcbc88b
hexfa7e96c391

1075865633681 has 4 divisors (see below), whose sum is σ = 1075867709952. Its totient is φ = 1075863557412.

The previous prime is 1075865633669. The next prime is 1075865633729. The reversal of 1075865633681 is 1863365685701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1075865633681 is a prime.

It is a super-2 number, since 2×10758656336812 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1075865633681.

It is not an unprimeable number, because it can be changed into a prime (1075865683681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454400 + ... + 1535646.

It is an arithmetic number, because the mean of its divisors is an integer number (268966927488).

Almost surely, 21075865633681 is an apocalyptic number.

It is an amenable number.

1075865633681 is a deficient number, since it is larger than the sum of its proper divisors (2076271).

1075865633681 is an equidigital number, since it uses as much as digits as its factorization.

1075865633681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2076270.

The product of its (nonzero) digits is 21772800, while the sum is 59.

The spelling of 1075865633681 in words is "one trillion, seventy-five billion, eight hundred sixty-five million, six hundred thirty-three thousand, six hundred eighty-one".

Divisors: 1 995023 1081247 1075865633681