640631424114 has 64 divisors (see below), whose sum is σ = 1553519422080. Its totient is φ = 194071541760.

The previous prime is 640631424113. The next prime is 640631424137. The reversal of 640631424114 is 411424136046.

640631424114 is a `hidden beast` number, since 6 + 4 + 0 + 631 + 4 + 2 + 4 + 1 + 14 = 666.

It is not an unprimeable number, because it can be changed into a prime (640631424113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1805154 + ... + 2130690.

It is an arithmetic number, because the mean of its divisors is an integer number (24273740970).

Almost surely, 2^640631424114 is an apocalyptic number.

640631424114 is an abundant number, since it is smaller than the sum of its proper divisors (912887997966).

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

640631424114 is a wasteful number, since it uses less digits than its factorization.

640631424114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328872 (or 328866 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 640631424114 in words is "six hundred forty billion, six hundred thirty-one million, four hundred twenty-four thousand, one hundred fourteen".