11970557016 has 128 divisors (see below), whose sum is σ = 33839942400. Its totient is φ = 3496711680.

The previous prime is 11970556993. The next prime is 11970557063. The reversal of 11970557016 is 61075507911.

It is a Smith number, since the sum of its digits (42) 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 31 ways as a sum of consecutive naturals, for example, 1059091 + ... + 1070333.

It is an arithmetic number, because the mean of its divisors is an integer number (264374550).

Almost surely, 2^11970557016 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 11970557016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16919971200).

11970557016 is an abundant number, since it is smaller than the sum of its proper divisors (21869385384).

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

11970557016 is a wasteful number, since it uses less digits than its factorization.

11970557016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11409 (or 11405 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 42.

The spelling of 11970557016 in words is "eleven billion, nine hundred seventy million, five hundred fifty-seven thousand, sixteen".