13162866972 has 72 divisors (see below), whose sum is σ = 33116565888. Its totient is φ = 4061391840.

The previous prime is 13162866943. The next prime is 13162866973. The reversal of 13162866972 is 27966826131.

It is a super-2 number, since 2×13162866972² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13162866973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240423 + ... + 290049.

It is an arithmetic number, because the mean of its divisors is an integer number (459952304).

Almost surely, 2^13162866972 is an apocalyptic number.

13162866972 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 13162866972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16558282944).

13162866972 is an abundant number, since it is smaller than the sum of its proper divisors (19953698916).

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

13162866972 is a wasteful number, since it uses less digits than its factorization.

13162866972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49719 (or 49686 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The spelling of 13162866972 in words is "thirteen billion, one hundred sixty-two million, eight hundred sixty-six thousand, nine hundred seventy-two".