23161397712 has 160 divisors (see below), whose sum is σ = 62932972032. Its totient is φ = 7333527552.

The previous prime is 23161397711. The next prime is 23161397731. The reversal of 23161397712 is 21779316132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23161397711) 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, 11597098 + ... + 11599094.

Almost surely, 2^23161397712 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 23161397712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31466486016).

23161397712 is an abundant number, since it is smaller than the sum of its proper divisors (39771574320).

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

23161397712 is a wasteful number, since it uses less digits than its factorization.

23161397712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205 (or 2199 counting only the distinct ones).

The product of its digits is 95256, while the sum is 42.

The spelling of 23161397712 in words is "twenty-three billion, one hundred sixty-one million, three hundred ninety-seven thousand, seven hundred twelve".