2187566640496 has 40 divisors (see below), whose sum is σ = 4253883832224. Its totient is φ = 1089793224960.

The previous prime is 2187566640439. The next prime is 2187566640503. The reversal of 2187566640496 is 6940466657812.

It is a super-2 number, since 2×2187566640496² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11514790 + ... + 11703226.

Almost surely, 2^{2187566640496} is an apocalyptic number.

It is an amenable number.

2187566640496 is a deficient number, since it is larger than the sum of its proper divisors (2066317191728).

2187566640496 is a wasteful number, since it uses less digits than its factorization.

2187566640496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191089 (or 191083 counting only the distinct ones).

The product of its (nonzero) digits is 104509440, while the sum is 64.

The spelling of 2187566640496 in words is "two trillion, one hundred eighty-seven billion, five hundred sixty-six million, six hundred forty thousand, four hundred ninety-six".