20575156344 has 32 divisors (see below), whose sum is σ = 52634123520. Its totient is φ = 6698887776.

The previous prime is 20575156337. The next prime is 20575156363. The reversal of 20575156344 is 44365157502.

It is a junction number, because it is equal to n+sod(n) for n = 20575156296 and 20575156305.

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, 9967552 + ... + 9969615.

It is an arithmetic number, because the mean of its divisors is an integer number (1644816360).

Almost surely, 2^20575156344 is an apocalyptic number.

20575156344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20575156344 is an abundant number, since it is smaller than the sum of its proper divisors (32058967176).

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

20575156344 is a wasteful number, since it uses less digits than its factorization.

20575156344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19937219 (or 19937215 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 20575156344 in words is "twenty billion, five hundred seventy-five million, one hundred fifty-six thousand, three hundred forty-four".