23509667512320 has 512 divisors, whose sum is σ = 84899386656000. Its totient is φ = 5502748590080.

The previous prime is 23509667512301. The next prime is 23509667512339. The reversal of 23509667512320 is 2321576690532.

It is an interprime number because it is at equal distance from previous prime (23509667512301) and next prime (23509667512339).

It is a tau number, because it is divible by the number of its divisors (512).

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, 156719911 + ... + 156869849.

Almost surely, 2^{23509667512320} is an apocalyptic number.

23509667512320 is a gapful number since it is divisible by the number (20) 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 23509667512320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42449693328000).

23509667512320 is an abundant number, since it is smaller than the sum of its proper divisors (61389719143680).

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

23509667512320 is a wasteful number, since it uses less digits than its factorization.

23509667512320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150017 (or 149989 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 51.

The spelling of 23509667512320 in words is "twenty-three trillion, five hundred nine billion, six hundred sixty-seven million, five hundred twelve thousand, three hundred twenty".