3256757949545 has 16 divisors (see below), whose sum is σ = 3919009770000. Its totient is φ = 2598142460928.

The previous prime is 3256757949539. The next prime is 3256757949587. The reversal of 3256757949545 is 5459497576523.

It can be written as a sum of positive squares in 8 ways, for example, as 695442580624 + 2561315368921 = 833932^2 + 1600411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3256757949545 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8862221 + ... + 9222389.

It is an arithmetic number, because the mean of its divisors is an integer number (244938110625).

Almost surely, 2^{3256757949545} is an apocalyptic number.

It is an amenable number.

3256757949545 is a deficient number, since it is larger than the sum of its proper divisors (662251820455).

3256757949545 is a wasteful number, since it uses less digits than its factorization.

3256757949545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365212.

The product of its digits is 1428840000, while the sum is 71.

The spelling of 3256757949545 in words is "three trillion, two hundred fifty-six billion, seven hundred fifty-seven million, nine hundred forty-nine thousand, five hundred forty-five".