20017535572 has 12 divisors (see below), whose sum is σ = 35091403060. Its totient is φ = 9991420416.

The previous prime is 20017535567. The next prime is 20017535599. The reversal of 20017535572 is 27553571002.

It can be written as a sum of positive squares in 2 ways, for example, as 19612882116 + 404653456 = 140046^2 + 20116^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4334247 + ... + 4338862.

Almost surely, 2^20017535572 is an apocalyptic number.

It is an amenable number.

20017535572 is a deficient number, since it is larger than the sum of its proper divisors (15073867488).

20017535572 is a wasteful number, since it uses less digits than its factorization.

20017535572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8673690 (or 8673688 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 37.

The spelling of 20017535572 in words is "twenty billion, seventeen million, five hundred thirty-five thousand, five hundred seventy-two".