645316455234 has 32 divisors (see below), whose sum is σ = 1421903419200. Its totient is φ = 193614296000.

The previous prime is 645316455197. The next prime is 645316455271. The reversal of 645316455234 is 432554613546.

It is an interprime number because it is at equal distance from previous prime (645316455197) and next prime (645316455271).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48396909 + ... + 48410240.

It is an arithmetic number, because the mean of its divisors is an integer number (44434481850).

Almost surely, 2^645316455234 is an apocalyptic number.

645316455234 is an abundant number, since it is smaller than the sum of its proper divisors (776586963966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

645316455234 is a wasteful number, since it uses less digits than its factorization.

645316455234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96807266.

The product of its digits is 5184000, while the sum is 48.

The spelling of 645316455234 in words is "six hundred forty-five billion, three hundred sixteen million, four hundred fifty-five thousand, two hundred thirty-four".