20131571659683 has 32 divisors (see below), whose sum is σ = 29835912418560. Its totient is φ = 11970292314240.

The previous prime is 20131571659649. The next prime is 20131571659709. The reversal of 20131571659683 is 38695617513102.

It is a Cunningham number, because it is equal to 4486822²-1.

It is not a de Polignac number, because 20131571659683 - 2¹³ = 20131571651491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20131571659883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49151085 + ... + 49558977.

It is an arithmetic number, because the mean of its divisors is an integer number (932372263080).

Almost surely, 2^{20131571659683} is an apocalyptic number.

20131571659683 is a deficient number, since it is larger than the sum of its proper divisors (9704340758877).

20131571659683 is a wasteful number, since it uses less digits than its factorization.

20131571659683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436179.

The product of its (nonzero) digits is 8164800, while the sum is 57.

The spelling of 20131571659683 in words is "twenty trillion, one hundred thirty-one billion, five hundred seventy-one million, six hundred fifty-nine thousand, six hundred eighty-three".