87517966456 has 16 divisors (see below), whose sum is σ = 164123175240. Its totient is φ = 43751786400.

The previous prime is 87517966451. The next prime is 87517966483. The reversal of 87517966456 is 65466971578.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87517966451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 847746 + ... + 945361.

Almost surely, 2^87517966456 is an apocalyptic number.

It is an amenable number.

87517966456 is a deficient number, since it is larger than the sum of its proper divisors (76605208784).

87517966456 is a wasteful number, since it uses less digits than its factorization.

87517966456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799214 (or 1799210 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 64.

The spelling of 87517966456 in words is "eighty-seven billion, five hundred seventeen million, nine hundred sixty-six thousand, four hundred fifty-six".