12887601555 has 16 divisors (see below), whose sum is σ = 20622712320. Its totient is φ = 6872537568.

The previous prime is 12887601533. The next prime is 12887601607. The reversal of 12887601555 is 55510678821.

It is not a de Polignac number, because 12887601555 - 2⁶ = 12887601491 is a prime.

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, 83574 + ... + 180996.

It is an arithmetic number, because the mean of its divisors is an integer number (1288919520).

Almost surely, 2^12887601555 is an apocalyptic number.

12887601555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12887601555 is a deficient number, since it is larger than the sum of its proper divisors (7735110765).

12887601555 is an equidigital number, since it uses as much as digits as its factorization.

12887601555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106250.

The product of its (nonzero) digits is 672000, while the sum is 48.

The spelling of 12887601555 in words is "twelve billion, eight hundred eighty-seven million, six hundred one thousand, five hundred fifty-five".