640142162204 has 48 divisors (see below), whose sum is σ = 1168132627200. Its totient is φ = 306695362176.

The previous prime is 640142162189. The next prime is 640142162279. The reversal of 640142162204 is 402261241046.

It is a super-2 number, since 2×640142162204² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4877312 + ... + 5006840.

It is an arithmetic number, because the mean of its divisors is an integer number (24336096400).

Almost surely, 2^640142162204 is an apocalyptic number.

It is an amenable number.

640142162204 is a deficient number, since it is larger than the sum of its proper divisors (527990464996).

640142162204 is a wasteful number, since it uses less digits than its factorization.

640142162204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130122 (or 130120 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 640142162204 in words is "six hundred forty billion, one hundred forty-two million, one hundred sixty-two thousand, two hundred four".