20554520542044 has 24 divisors (see below), whose sum is σ = 47963206856208. Its totient is φ = 6851127000960.

The previous prime is 20554520541949. The next prime is 20554520542051. The reversal of 20554520542044 is 44024502545502.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20554520541987 and 20554520542005.

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, 47255287 + ... + 47688270.

It is an arithmetic number, because the mean of its divisors is an integer number (1998466952342).

Almost surely, 2^{20554520542044} is an apocalyptic number.

It is an amenable number.

20554520542044 is an abundant number, since it is smaller than the sum of its proper divisors (27408686314164).

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

20554520542044 is a wasteful number, since it uses less digits than its factorization.

20554520542044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94961605 (or 94961603 counting only the distinct ones).

The product of its (nonzero) digits is 1280000, while the sum is 42.

The spelling of 20554520542044 in words is "twenty trillion, five hundred fifty-four billion, five hundred twenty million, five hundred forty-two thousand, forty-four".