645270630524 has 48 divisors (see below), whose sum is σ = 1237503760416. Its totient is φ = 292617312000.

The previous prime is 645270630523. The next prime is 645270630533. The reversal of 645270630524 is 425036072546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645270630523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219074 + ... + 1156950.

It is an arithmetic number, because the mean of its divisors is an integer number (25781328342).

Almost surely, 2^645270630524 is an apocalyptic number.

It is an amenable number.

645270630524 is a deficient number, since it is larger than the sum of its proper divisors (592233129892).

645270630524 is a wasteful number, since it uses less digits than its factorization.

645270630524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938126 (or 938124 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 44.

The spelling of 645270630524 in words is "six hundred forty-five billion, two hundred seventy million, six hundred thirty thousand, five hundred twenty-four".