745257564405 has 64 divisors (see below), whose sum is σ = 1337479153920. Its totient is φ = 393702156288.

The previous prime is 745257564391. The next prime is 745257564413. The reversal of 745257564405 is 504465752547.

745257564405 is a `hidden beast` number, since 7 + 4 + 5 + 2 + 575 + 64 + 4 + 0 + 5 = 666.

It is not a de Polignac number, because 745257564405 - 2⁷ = 745257564277 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25262794 + ... + 25292276.

It is an arithmetic number, because the mean of its divisors is an integer number (20898111780).

Almost surely, 2^745257564405 is an apocalyptic number.

It is an amenable number.

745257564405 is a deficient number, since it is larger than the sum of its proper divisors (592221589515).

745257564405 is a wasteful number, since it uses less digits than its factorization.

745257564405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31267 (or 31261 counting only the distinct ones).

The product of its (nonzero) digits is 23520000, while the sum is 54.

The spelling of 745257564405 in words is "seven hundred forty-five billion, two hundred fifty-seven million, five hundred sixty-four thousand, four hundred five".