20436653163220 has 96 divisors (see below), whose sum is σ = 51927876806400. Its totient is φ = 6599700301824.

The previous prime is 20436653163211. The next prime is 20436653163229. The reversal of 20436653163220 is 2236135663402.

It is an interprime number because it is at equal distance from previous prime (20436653163211) and next prime (20436653163229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20436653163229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21744885 + ... + 22665244.

It is an arithmetic number, because the mean of its divisors is an integer number (540915383400).

Almost surely, 2^{20436653163220} is an apocalyptic number.

20436653163220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20436653163220 is an abundant number, since it is smaller than the sum of its proper divisors (31491223643180).

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

20436653163220 is a wasteful number, since it uses less digits than its factorization.

20436653163220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44410337 (or 44410335 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 20436653163220 in words is "twenty trillion, four hundred thirty-six billion, six hundred fifty-three million, one hundred sixty-three thousand, two hundred twenty".