20564727052 has 24 divisors (see below), whose sum is σ = 37266445440. Its totient is φ = 9919265280.

The previous prime is 20564727049. The next prime is 20564727067. The reversal of 20564727052 is 25072746502.

It is a super-2 number, since 2×20564727052² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20564726996 and 20564727014.

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, 222277 + ... + 300892.

It is an arithmetic number, because the mean of its divisors is an integer number (1552768560).

Almost surely, 2^20564727052 is an apocalyptic number.

It is an amenable number.

20564727052 is a deficient number, since it is larger than the sum of its proper divisors (16701718388).

20564727052 is a wasteful number, since it uses less digits than its factorization.

20564727052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523521 (or 523519 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

The spelling of 20564727052 in words is "twenty billion, five hundred sixty-four million, seven hundred twenty-seven thousand, fifty-two".