15972130032 has 40 divisors (see below), whose sum is σ = 42039858384. Its totient is φ = 5223588864.

The previous prime is 15972130021. The next prime is 15972130033. The reversal of 15972130032 is 23003127951.

It is a junction number, because it is equal to n+sod(n) for n = 15972129975 and 15972130002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15972130033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3136633 + ... + 3141720.

Almost surely, 2^15972130032 is an apocalyptic number.

15972130032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15972130032 is an abundant number, since it is smaller than the sum of its proper divisors (26067728352).

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

15972130032 is a wasteful number, since it uses less digits than its factorization.

15972130032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6278417 (or 6278411 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

Adding to 15972130032 its reverse (23003127951), we get a palindrome (38975257983).

The spelling of 15972130032 in words is "fifteen billion, nine hundred seventy-two million, one hundred thirty thousand, thirty-two".