745445665256 has 64 divisors (see below), whose sum is σ = 1428996453120. Its totient is φ = 364430626560.

The previous prime is 745445665249. The next prime is 745445665271. The reversal of 745445665256 is 652566544547.

It is a junction number, because it is equal to n+sod(n) for n = 745445665195 and 745445665204.

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, 205298561 + ... + 205302191.

It is an arithmetic number, because the mean of its divisors is an integer number (22328069580).

Almost surely, 2^745445665256 is an apocalyptic number.

It is an amenable number.

745445665256 is a deficient number, since it is larger than the sum of its proper divisors (683550787864).

745445665256 is a wasteful number, since it uses less digits than its factorization.

745445665256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226 (or 5222 counting only the distinct ones).

The product of its digits is 120960000, while the sum is 59.

The spelling of 745445665256 in words is "seven hundred forty-five billion, four hundred forty-five million, six hundred sixty-five thousand, two hundred fifty-six".