640148475210 has 64 divisors (see below), whose sum is σ = 1551598405632. Its totient is φ = 169014517056.

The previous prime is 640148475193. The next prime is 640148475227. The reversal of 640148475210 is 12574841046.

It is an interprime number because it is at equal distance from previous prime (640148475193) and next prime (640148475227).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5667507 + ... + 5779353.

It is an arithmetic number, because the mean of its divisors is an integer number (24243725088).

Almost surely, 2^640148475210 is an apocalyptic number.

640148475210 is an abundant number, since it is smaller than the sum of its proper divisors (911449930422).

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

640148475210 is a wasteful number, since it uses less digits than its factorization.

640148475210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113747.

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 640148475210 in words is "six hundred forty billion, one hundred forty-eight million, four hundred seventy-five thousand, two hundred ten".