20554115544512 has 56 divisors (see below), whose sum is σ = 44496584902512. Its totient is φ = 9342444646400.

The previous prime is 20554115544503. The next prime is 20554115544553. The reversal of 20554115544512 is 21544551145502.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19668008 + ... + 20686680.

Almost surely, 2^{20554115544512} is an apocalyptic number.

20554115544512 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20554115544512 is an abundant number, since it is smaller than the sum of its proper divisors (23942469358000).

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

20554115544512 is a wasteful number, since it uses less digits than its factorization.

20554115544512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047357 (or 1047347 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 44.

The spelling of 20554115544512 in words is "twenty trillion, five hundred fifty-four billion, one hundred fifteen million, five hundred forty-four thousand, five hundred twelve".