90556884873 has 80 divisors (see below), whose sum is σ = 167030134656. Its totient is φ = 47612448000.

The previous prime is 90556884863. The next prime is 90556884883. The reversal of 90556884873 is 37848865509.

90556884873 is a `hidden beast` number, since 9 + 0 + 556 + 8 + 8 + 4 + 8 + 73 = 666.

It is an interprime number because it is at equal distance from previous prime (90556884863) and next prime (90556884883).

It is not a de Polignac number, because 90556884873 - 2⁵ = 90556884841 is a prime.

It is a super-2 number, since 2×90556884873² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 90556884873.

It is not an unprimeable number, because it can be changed into a prime (90556884833) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2287498 + ... + 2326748.

Almost surely, 2^90556884873 is an apocalyptic number.

It is an amenable number.

90556884873 is a deficient number, since it is larger than the sum of its proper divisors (76473249783).

90556884873 is a wasteful number, since it uses less digits than its factorization.

90556884873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39596 (or 39587 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 90556884873 in words is "ninety billion, five hundred fifty-six million, eight hundred eighty-four thousand, eight hundred seventy-three".