12020631732 has 36 divisors (see below), whose sum is σ = 31984723680. Its totient is φ = 3795988752.

The previous prime is 12020631691. The next prime is 12020631761. The reversal of 12020631732 is 23713602021.

12020631732 is a `hidden beast` number, since 1 + 2 + 0 + 20 + 631 + 7 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 12020631696 and 12020631705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8786328 + ... + 8787695.

Almost surely, 2^12020631732 is an apocalyptic number.

12020631732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12020631732 is an abundant number, since it is smaller than the sum of its proper divisors (19964091948).

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

12020631732 is a wasteful number, since it uses less digits than its factorization.

12020631732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17574052 (or 17574047 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The spelling of 12020631732 in words is "twelve billion, twenty million, six hundred thirty-one thousand, seven hundred thirty-two".