21632009539131 has 48 divisors (see below), whose sum is σ = 33801909373440. Its totient is φ = 13284335741760.

The previous prime is 21632009539111. The next prime is 21632009539213. The reversal of 21632009539131 is 13193590023612.

21632009539131 is a `hidden beast` number, since 2 + 1 + 63 + 20 + 0 + 9 + 539 + 1 + 31 = 666.

It is not a de Polignac number, because 21632009539131 - 2¹⁵ = 21632009506363 is a prime.

It is a super-2 number, since 2×21632009539131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21632009539111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8513566 + ... + 10758476.

It is an arithmetic number, because the mean of its divisors is an integer number (704206445280).

Almost surely, 2^{21632009539131} is an apocalyptic number.

21632009539131 is a deficient number, since it is larger than the sum of its proper divisors (12169899834309).

21632009539131 is a wasteful number, since it uses less digits than its factorization.

21632009539131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246496 (or 2246493 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The spelling of 21632009539131 in words is "twenty-one trillion, six hundred thirty-two billion, nine million, five hundred thirty-nine thousand, one hundred thirty-one".