90531598638636 has 72 divisors (see below), whose sum is σ = 234171213900624. Its totient is φ = 29474711562240.

The previous prime is 90531598638599. The next prime is 90531598638671. The reversal of 90531598638636 is 63683689513509.

90531598638636 is a `hidden beast` number, since 9 + 0 + 531 + 5 + 9 + 8 + 6 + 3 + 86 + 3 + 6 = 666.

90531598638636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67386460 + ... + 68716796.

It is an arithmetic number, because the mean of its divisors is an integer number (3252377970842).

Almost surely, 2^{90531598638636} is an apocalyptic number.

It is an amenable number.

90531598638636 is an abundant number, since it is smaller than the sum of its proper divisors (143639615261988).

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

90531598638636 is a wasteful number, since it uses less digits than its factorization.

90531598638636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374351 (or 1374346 counting only the distinct ones).

The product of its (nonzero) digits is 755827200, while the sum is 72.

The spelling of 90531598638636 in words is "ninety trillion, five hundred thirty-one billion, five hundred ninety-eight million, six hundred thirty-eight thousand, six hundred thirty-six".