12151646532 has 36 divisors (see below), whose sum is σ = 31020796716. Its totient is φ = 4010443200.

The previous prime is 12151646531. The next prime is 12151646587. The reversal of 12151646532 is 23564615121.

12151646532 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 1 + 646 + 5 + 3 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5071433796 + 7080212736 = 71214^2 + 84144^2 .

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

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

It is not an unprimeable number, because it can be changed into a prime (12151646531) 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, 1667383 + ... + 1674654.

Almost surely, 2^12151646532 is an apocalyptic number.

12151646532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12151646532 is an abundant number, since it is smaller than the sum of its proper divisors (18869150184).

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

12151646532 is a wasteful number, since it uses less digits than its factorization.

12151646532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3342148 (or 3342143 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 12151646532 in words is "twelve billion, one hundred fifty-one million, six hundred forty-six thousand, five hundred thirty-two".