20554562253126 has 64 divisors (see below), whose sum is σ = 47292952734720. Its totient is φ = 5890043446560.

The previous prime is 20554562253053. The next prime is 20554562253149. The reversal of 20554562253126 is 62135226545502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14296876 + ... + 15668751.

It is an arithmetic number, because the mean of its divisors is an integer number (738952386480).

Almost surely, 2^{20554562253126} is an apocalyptic number.

20554562253126 is an abundant number, since it is smaller than the sum of its proper divisors (26738390481594).

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

20554562253126 is a wasteful number, since it uses less digits than its factorization.

20554562253126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29966209.

The product of its (nonzero) digits is 4320000, while the sum is 48.

Adding to 20554562253126 its reverse (62135226545502), we get a palindrome (82689788798628).

The spelling of 20554562253126 in words is "twenty trillion, five hundred fifty-four billion, five hundred sixty-two million, two hundred fifty-three thousand, one hundred twenty-six".