645486027522 has 16 divisors (see below), whose sum is σ = 1475396634432. Its totient is φ = 184424579280.

The previous prime is 645486027517. The next prime is 645486027583. The reversal of 645486027522 is 225720684546.

It is a super-2 number, since 2×645486027522² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7684357429 + ... + 7684357512.

It is an arithmetic number, because the mean of its divisors is an integer number (92212289652).

Almost surely, 2^645486027522 is an apocalyptic number.

645486027522 is an abundant number, since it is smaller than the sum of its proper divisors (829910606910).

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

645486027522 is a wasteful number, since it uses less digits than its factorization.

645486027522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15368714953.

The product of its (nonzero) digits is 6451200, while the sum is 51.

The spelling of 645486027522 in words is "six hundred forty-five billion, four hundred eighty-six million, twenty-seven thousand, five hundred twenty-two".