90550715904 has 540 divisors, whose sum is σ = 301263470508. Its totient is φ = 26161090560.

The previous prime is 90550715867. The next prime is 90550715921. The reversal of 90550715904 is 40951705509.

90550715904 is a `hidden beast` number, since 9 + 0 + 5 + 50 + 7 + 1 + 590 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 90550715904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 294953319 + ... + 294953625.

Almost surely, 2^90550715904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90550715904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150631735254).

90550715904 is an abundant number, since it is smaller than the sum of its proper divisors (210712754604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90550715904 is a wasteful number, since it uses less digits than its factorization.

90550715904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 283500, while the sum is 45.

The spelling of 90550715904 in words is "ninety billion, five hundred fifty million, seven hundred fifteen thousand, nine hundred four".