645002422522626 has 16 divisors (see below), whose sum is σ = 1474291251480384. Its totient is φ = 184286406435024.

The previous prime is 645002422522561. The next prime is 645002422522697. The reversal of 645002422522626 is 626225224200546.

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, 7678600268085 + ... + 7678600268168.

It is an arithmetic number, because the mean of its divisors is an integer number (92143203217524).

Almost surely, 2^{645002422522626} is an apocalyptic number.

645002422522626 is an abundant number, since it is smaller than the sum of its proper divisors (829288828957758).

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

645002422522626 is a wasteful number, since it uses less digits than its factorization.

645002422522626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15357200536265.

The product of its (nonzero) digits is 5529600, while the sum is 48.

The spelling of 645002422522626 in words is "six hundred forty-five trillion, two billion, four hundred twenty-two million, five hundred twenty-two thousand, six hundred twenty-six".