745878958321 has 32 divisors (see below), whose sum is σ = 901906790400. Its totient is φ = 602999489664.

The previous prime is 745878958313. The next prime is 745878958343. The reversal of 745878958321 is 123859878547.

It is a cyclic number.

It is not a de Polignac number, because 745878958321 - 2³ = 745878958313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745878958351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90482226 + ... + 90490468.

It is an arithmetic number, because the mean of its divisors is an integer number (28184587200).

Almost surely, 2^745878958321 is an apocalyptic number.

It is an amenable number.

745878958321 is a deficient number, since it is larger than the sum of its proper divisors (156027832079).

745878958321 is a wasteful number, since it uses less digits than its factorization.

745878958321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16045.

The product of its digits is 135475200, while the sum is 67.

The spelling of 745878958321 in words is "seven hundred forty-five billion, eight hundred seventy-eight million, nine hundred fifty-eight thousand, three hundred twenty-one".