640140522316 has 24 divisors (see below), whose sum is σ = 1131968583536. Its totient is φ = 316721940480.

The previous prime is 640140522271. The next prime is 640140522317. The reversal of 640140522316 is 613225041046.

It is a super-2 number, since 2×640140522316² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (640140522317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2472820 + ... + 2719396.

Almost surely, 2^640140522316 is an apocalyptic number.

It is an amenable number.

640140522316 is a deficient number, since it is larger than the sum of its proper divisors (491828061220).

640140522316 is a wasteful number, since it uses less digits than its factorization.

640140522316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253369 (or 253367 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 640140522316 in words is "six hundred forty billion, one hundred forty million, five hundred twenty-two thousand, three hundred sixteen".