20553236496 has 135 divisors (see below), whose sum is σ = 62353378269. Its totient is φ = 6317191296.

The previous prime is 20553236467. The next prime is 20553236503. The reversal of 20553236496 is 69463235502.

The square root of 20553236496 is 143364.

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

20553236496 is a `hidden beast` number, since 2 + 0 + 553 + 2 + 3 + 6 + 4 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3040419600 + 17512816896 = 55140^2 + 132336^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 22364325 + ... + 22365243.

Almost surely, 2^20553236496 is an apocalyptic number.

20553236496 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20553236496 is the 143364-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20553236496

20553236496 is an abundant number, since it is smaller than the sum of its proper divisors (41800141773).

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

20553236496 is an equidigital number, since it uses as much as digits as its factorization.

20553236496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878 (or 937 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 45.

It can be divided in two parts, 20553 and 236496, that added together give a square (257049 = 507²).

The spelling of 20553236496 in words is "twenty billion, five hundred fifty-three million, two hundred thirty-six thousand, four hundred ninety-six".