12020631696 has 60 divisors (see below), whose sum is σ = 34192591420. Its totient is φ = 3941187840.

The previous prime is 12020631691. The next prime is 12020631761. The reversal of 12020631696 is 69613602021.

It is a happy number.

12020631696 is a `hidden beast` number, since 12 + 0 + 2 + 0 + 631 + 6 + 9 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5709918096 + 6310713600 = 75564^2 + 79440^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12020631696.

It is not an unprimeable number, because it can be changed into a prime (12020631691) 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, 675451 + ... + 693018.

Almost surely, 2^12020631696 is an apocalyptic number.

12020631696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12020631696 is an abundant number, since it is smaller than the sum of its proper divisors (22171959724).

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

12020631696 is a wasteful number, since it uses less digits than its factorization.

12020631696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368544 (or 1368535 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 12020631696 in words is "twelve billion, twenty million, six hundred thirty-one thousand, six hundred ninety-six".