12500456466840 has 64 divisors (see below), whose sum is σ = 37521392162400. Its totient is φ = 3331675256832.

The previous prime is 12500456466793. The next prime is 12500456466853. The reversal of 12500456466840 is 4866465400521.

It is a super-2 number, since 2×12500456466840² (a number of 27 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 15 ways as a sum of consecutive naturals, for example, 27583695 + ... + 28033214.

Almost surely, 2^{12500456466840} is an apocalyptic number.

12500456466840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12500456466840 is an abundant number, since it is smaller than the sum of its proper divisors (25020935695560).

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

12500456466840 is a wasteful number, since it uses less digits than its factorization.

12500456466840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55618796 (or 55618792 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 51.

The spelling of 12500456466840 in words is "twelve trillion, five hundred billion, four hundred fifty-six million, four hundred sixty-six thousand, eight hundred forty".