26487117987 has 16 divisors (see below), whose sum is σ = 38535329280. Its totient is φ = 16049210400.

The previous prime is 26487117983. The next prime is 26487118001. The reversal of 26487117987 is 78971178462.

It is not a de Polignac number, because 26487117987 - 2² = 26487117983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26487117987.

It is not an unprimeable number, because it can be changed into a prime (26487117983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64089 + ... + 238917.

It is an arithmetic number, because the mean of its divisors is an integer number (2408458080).

Almost surely, 2^26487117987 is an apocalyptic number.

26487117987 is a deficient number, since it is larger than the sum of its proper divisors (12048211293).

26487117987 is a wasteful number, since it uses less digits than its factorization.

26487117987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179434.

The product of its digits is 9483264, while the sum is 60.

The spelling of 26487117987 in words is "twenty-six billion, four hundred eighty-seven million, one hundred seventeen thousand, nine hundred eighty-seven".