745021056431251 has 32 divisors (see below), whose sum is σ = 798724484812800. Its totient is φ = 693197493246720.

The previous prime is 745021056431233. The next prime is 745021056431257. The reversal of 745021056431251 is 152134650120547.

It is a cyclic number.

It is not a de Polignac number, because 745021056431251 - 2⁵ = 745021056431219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745021056431257) 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, 970607430 + ... + 971374708.

It is an arithmetic number, because the mean of its divisors is an integer number (24960140150400).

Almost surely, 2^{745021056431251} is an apocalyptic number.

745021056431251 is a deficient number, since it is larger than the sum of its proper divisors (53703428381549).

745021056431251 is a wasteful number, since it uses less digits than its factorization.

745021056431251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770379.

The product of its (nonzero) digits is 1008000, while the sum is 46.

The spelling of 745021056431251 in words is "seven hundred forty-five trillion, twenty-one billion, fifty-six million, four hundred thirty-one thousand, two hundred fifty-one".