20577520572252 has 48 divisors (see below), whose sum is σ = 55646252831232. Its totient is φ = 5796484666560.

The previous prime is 20577520572239. The next prime is 20577520572253. The reversal of 20577520572252 is 25227502577502.

It is a junction number, because it is equal to n+sod(n) for n = 20577520572195 and 20577520572204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20577520572253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1725138283 + ... + 1725150210.

It is an arithmetic number, because the mean of its divisors is an integer number (1159296933984).

Almost surely, 2^{20577520572252} is an apocalyptic number.

It is an amenable number.

20577520572252 is an abundant number, since it is smaller than the sum of its proper divisors (35068732258980).

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

20577520572252 is a wasteful number, since it uses less digits than its factorization.

20577520572252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450288578 (or 3450288576 counting only the distinct ones).

The product of its (nonzero) digits is 6860000, while the sum is 51.

The spelling of 20577520572252 in words is "twenty trillion, five hundred seventy-seven billion, five hundred twenty million, five hundred seventy-two thousand, two hundred fifty-two".