20577580562396 has 144 divisors (see below), whose sum is σ = 44108322904800. Its totient is φ = 8338395985920.

The previous prime is 20577580562387. The next prime is 20577580562401. The reversal of 20577580562396 is 69326508577502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23652200 + ... + 24506768.

It is an arithmetic number, because the mean of its divisors is an integer number (306307797950).

Almost surely, 2^{20577580562396} is an apocalyptic number.

20577580562396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20577580562396 is an abundant number, since it is smaller than the sum of its proper divisors (23530742342404).

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

20577580562396 is a wasteful number, since it uses less digits than its factorization.

20577580562396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854740 (or 854727 counting only the distinct ones).

The product of its (nonzero) digits is 190512000, while the sum is 65.

The spelling of 20577580562396 in words is "twenty trillion, five hundred seventy-seven billion, five hundred eighty million, five hundred sixty-two thousand, three hundred ninety-six".