2251640718502 has 12 divisors (see below), whose sum is σ = 3928883294700. Its totient is φ = 964988879316.

The previous prime is 2251640718409. The next prime is 2251640718511. The reversal of 2251640718502 is 2058170461522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11487962752 + ... + 11487962947.

It is an arithmetic number, because the mean of its divisors is an integer number (327406941225).

Almost surely, 2^{2251640718502} is an apocalyptic number.

2251640718502 is a deficient number, since it is larger than the sum of its proper divisors (1677242576198).

2251640718502 is a wasteful number, since it uses less digits than its factorization.

2251640718502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22975925715 (or 22975925708 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 2251640718502 in words is "two trillion, two hundred fifty-one billion, six hundred forty million, seven hundred eighteen thousand, five hundred two".