15949651032 has 256 divisors, whose sum is σ = 52925030400. Its totient is φ = 4408992000.

The previous prime is 15949651021. The next prime is 15949651051. The reversal of 15949651032 is 23015694951.

15949651032 is a `hidden beast` number, since 1 + 59 + 496 + 5 + 103 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3794532 + ... + 3798732.

It is an arithmetic number, because the mean of its divisors is an integer number (206738400).

Almost surely, 2^15949651032 is an apocalyptic number.

15949651032 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 15949651032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26462515200).

15949651032 is an abundant number, since it is smaller than the sum of its proper divisors (36975379368).

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

15949651032 is an equidigital number, since it uses as much as digits as its factorization.

15949651032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266 (or 4244 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 15949651032 in words is "fifteen billion, nine hundred forty-nine million, six hundred fifty-one thousand, thirty-two".