15972052376 has 64 divisors (see below), whose sum is σ = 35509985280. Its totient is φ = 6590586240.

The previous prime is 15972052363. The next prime is 15972052409. The reversal of 15972052376 is 67325027951.

It is a self number, because there is not a number n which added to its sum of digits gives 15972052376.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318641 + ... + 365343.

It is an arithmetic number, because the mean of its divisors is an integer number (554843520).

Almost surely, 2^15972052376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15972052376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17754992640).

15972052376 is an abundant number, since it is smaller than the sum of its proper divisors (19537932904).

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

15972052376 is a wasteful number, since it uses less digits than its factorization.

15972052376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46944 (or 46940 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 47.

The spelling of 15972052376 in words is "fifteen billion, nine hundred seventy-two million, fifty-two thousand, three hundred seventy-six".