20187596632993 has 12 divisors (see below), whose sum is σ = 21306221088768. Its totient is φ = 19124913771000.

The previous prime is 20187596632967. The next prime is 20187596633027. The reversal of 20187596632993 is 39923669578102.

It is not a de Polignac number, because 20187596632993 - 2²¹ = 20187594535841 is a prime.

It is a super-2 number, since 2×20187596632993² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20187596632943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54710868 + ... + 55078618.

It is an arithmetic number, because the mean of its divisors is an integer number (1775518424064).

Almost surely, 2^{20187596632993} is an apocalyptic number.

It is an amenable number.

20187596632993 is a deficient number, since it is larger than the sum of its proper divisors (1118624455775).

20187596632993 is a wasteful number, since it uses less digits than its factorization.

20187596632993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519852 (or 519833 counting only the distinct ones).

The product of its (nonzero) digits is 264539520, while the sum is 70.

The spelling of 20187596632993 in words is "twenty trillion, one hundred eighty-seven billion, five hundred ninety-six million, six hundred thirty-two thousand, nine hundred ninety-three".