20455321835536 has 45 divisors (see below), whose sum is σ = 46103032465119. Its totient is φ = 8766512227872.

The previous prime is 20455321835513. The next prime is 20455321835549. The reversal of 20455321835536 is 63553812355402.

The square root of 20455321835536 is 4522756.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 126556405 + ... + 126717931.

Almost surely, 2^{20455321835536} is an apocalyptic number.

20455321835536 is the 4522756-th square number.

It is an amenable number.

20455321835536 is an abundant number, since it is smaller than the sum of its proper divisors (25647710629583).

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

20455321835536 is an frugal number, since it uses more digits than its factorization.

20455321835536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323076 (or 161536 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 52.

The spelling of 20455321835536 in words is "twenty trillion, four hundred fifty-five billion, three hundred twenty-one million, eight hundred thirty-five thousand, five hundred thirty-six".