90087762550 has 24 divisors (see below), whose sum is σ = 177419901096. Its totient is φ = 33915392640.

The previous prime is 90087762521. The next prime is 90087762551. The reversal of 90087762550 is 5526778009.

It is a super-2 number, since 2×90087762550² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90087762494 and 90087762503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90087762551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52991952 + ... + 52993651.

It is an arithmetic number, because the mean of its divisors is an integer number (7392495879).

Almost surely, 2^90087762550 is an apocalyptic number.

90087762550 is a deficient number, since it is larger than the sum of its proper divisors (87332138546).

90087762550 is a wasteful number, since it uses less digits than its factorization.

90087762550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105985632 (or 105985627 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 90087762550 in words is "ninety billion, eighty-seven million, seven hundred sixty-two thousand, five hundred fifty".