645074598311 has 32 divisors (see below), whose sum is σ = 786039218496. Its totient is φ = 521475840000.

The previous prime is 645074598283. The next prime is 645074598313. The reversal of 645074598311 is 113895470546.

645074598311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-645074598311 is a prime.

It is a super-2 number, since 2×645074598311² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645074598313) 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, 69170 + ... + 1137951.

It is an arithmetic number, because the mean of its divisors is an integer number (24563725578).

Almost surely, 2^645074598311 is an apocalyptic number.

645074598311 is a deficient number, since it is larger than the sum of its proper divisors (140964620185).

645074598311 is a wasteful number, since it uses less digits than its factorization.

645074598311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207283.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 645074598311 in words is "six hundred forty-five billion, seventy-four million, five hundred ninety-eight thousand, three hundred eleven".