90775447992320 has 192 divisors, whose sum is σ = 268071247604160. Its totient is φ = 28728932696064.

The previous prime is 90775447992311. The next prime is 90775447992337. The reversal of 90775447992320 is 2329974457709.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47775797 + ... + 49639476.

It is an arithmetic number, because the mean of its divisors is an integer number (1396204414605).

Almost surely, 2^{90775447992320} is an apocalyptic number.

It is an amenable number.

90775447992320 is an abundant number, since it is smaller than the sum of its proper divisors (177295799611840).

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

90775447992320 is a wasteful number, since it uses less digits than its factorization.

90775447992320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97415320 (or 97415300 counting only the distinct ones).

The product of its (nonzero) digits is 240045120, while the sum is 68.

The spelling of 90775447992320 in words is "ninety trillion, seven hundred seventy-five billion, four hundred forty-seven million, nine hundred ninety-two thousand, three hundred twenty".