12887507773938 has 32 divisors (see below), whose sum is σ = 29465327637504. Its totient is φ = 3681124201872.

The previous prime is 12887507773883. The next prime is 12887507773949. The reversal of 12887507773938 is 83937770578821.

It is a super-2 number, since 2×12887507773938² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12887507773938.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42383220 + ... + 42686207.

It is an arithmetic number, because the mean of its divisors is an integer number (920791488672).

Almost surely, 2^{12887507773938} is an apocalyptic number.

12887507773938 is an abundant number, since it is smaller than the sum of its proper divisors (16577819863566).

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

12887507773938 is a wasteful number, since it uses less digits than its factorization.

12887507773938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85073046.

The product of its (nonzero) digits is 995742720, while the sum is 75.

The spelling of 12887507773938 in words is "twelve trillion, eight hundred eighty-seven billion, five hundred seven million, seven hundred seventy-three thousand, nine hundred thirty-eight".