15931416956 has 96 divisors (see below), whose sum is σ = 35702833152. Its totient is φ = 6050661120.

The previous prime is 15931416947. The next prime is 15931416959. The reversal of 15931416956 is 65961413951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15931416959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1427510 + ... + 1438626.

It is an arithmetic number, because the mean of its divisors is an integer number (371904512).

Almost surely, 2^15931416956 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 15931416956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17851416576).

15931416956 is an abundant number, since it is smaller than the sum of its proper divisors (19771416196).

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

15931416956 is a wasteful number, since it uses less digits than its factorization.

15931416956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11299 (or 11297 counting only the distinct ones).

The product of its digits is 874800, while the sum is 50.

The spelling of 15931416956 in words is "fifteen billion, nine hundred thirty-one million, four hundred sixteen thousand, nine hundred fifty-six".