90663773632 has 28 divisors (see below), whose sum is σ = 184299002496. Its totient is φ = 44226229760.

The previous prime is 90663773581. The next prime is 90663773653. The reversal of 90663773632 is 23637736609.

It is a self number, because there is not a number n which added to its sum of digits gives 90663773632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17273248 + ... + 17278495.

It is an arithmetic number, because the mean of its divisors is an integer number (6582107232).

Almost surely, 2^90663773632 is an apocalyptic number.

It is an amenable number.

90663773632 is an abundant number, since it is smaller than the sum of its proper divisors (93635228864).

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

90663773632 is a wasteful number, since it uses less digits than its factorization.

90663773632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34551796 (or 34551786 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 52.

The spelling of 90663773632 in words is "ninety billion, six hundred sixty-three million, seven hundred seventy-three thousand, six hundred thirty-two".