20554251055452 has 72 divisors (see below), whose sum is σ = 53364773863856. Its totient is φ = 6665748505344.

The previous prime is 20554251055439. The next prime is 20554251055463. The reversal of 20554251055452 is 25455015245502.

20554251055452 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 42 + 5 + 1 + 0 + 554 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20554251055398 and 20554251055407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17584968 + ... + 18717360.

Almost surely, 2^{20554251055452} is an apocalyptic number.

It is an amenable number.

20554251055452 is an abundant number, since it is smaller than the sum of its proper divisors (32810522808404).

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

20554251055452 is a wasteful number, since it uses less digits than its factorization.

20554251055452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146067 (or 1146062 counting only the distinct ones).

The product of its (nonzero) digits is 2000000, while the sum is 45.

The spelling of 20554251055452 in words is "twenty trillion, five hundred fifty-four billion, two hundred fifty-one million, fifty-five thousand, four hundred fifty-two".