20572516650 has 48 divisors (see below), whose sum is σ = 58308393024. Its totient is φ = 4702289280.

The previous prime is 20572516621. The next prime is 20572516661. The reversal of 20572516650 is 5661527502.

It is a junction number, because it is equal to n+sod(n) for n = 20572516599 and 20572516608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9795387 + ... + 9797486.

It is an arithmetic number, because the mean of its divisors is an integer number (1214758188).

Almost surely, 2^20572516650 is an apocalyptic number.

20572516650 is an abundant number, since it is smaller than the sum of its proper divisors (37735876374).

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

20572516650 is a wasteful number, since it uses less digits than its factorization.

20572516650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19592895 (or 19592890 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The spelling of 20572516650 in words is "twenty billion, five hundred seventy-two million, five hundred sixteen thousand, six hundred fifty".