15491832012 has 96 divisors (see below), whose sum is σ = 42715088640. Its totient is φ = 4838641920.

The previous prime is 15491832011. The next prime is 15491832017. The reversal of 15491832012 is 21023819451.

15491832012 is a `hidden beast` number, since 1 + 549 + 1 + 83 + 20 + 12 = 666.

15491832012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (15491832011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 398187 + ... + 435357.

It is an arithmetic number, because the mean of its divisors is an integer number (444948840).

Almost surely, 2^15491832012 is an apocalyptic number.

15491832012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15491832012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21357544320).

15491832012 is an abundant number, since it is smaller than the sum of its proper divisors (27223256628).

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

15491832012 is a wasteful number, since it uses less digits than its factorization.

15491832012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37428 (or 37420 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 15491832012 in words is "fifteen billion, four hundred ninety-one million, eight hundred thirty-two thousand, twelve".