20816915152032 has 72 divisors (see below), whose sum is σ = 59202299729664. Its totient is φ = 6938479730304.

The previous prime is 20816915151953. The next prime is 20816915152043. The reversal of 20816915152032 is 23025151961802.

20816915152032 is a `hidden beast` number, since 2 + 0 + 8 + 1 + 6 + 91 + 5 + 1 + 520 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1517823 + ... + 6628545.

It is an arithmetic number, because the mean of its divisors is an integer number (822254162912).

Almost surely, 2^{20816915152032} is an apocalyptic number.

It is an amenable number.

20816915152032 is an abundant number, since it is smaller than the sum of its proper divisors (38385384577632).

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

20816915152032 is a wasteful number, since it uses less digits than its factorization.

20816915152032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5124882 (or 5124871 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 20816915152032 in words is "twenty trillion, eight hundred sixteen billion, nine hundred fifteen million, one hundred fifty-two thousand, thirty-two".