23953121280 has 672 divisors, whose sum is σ = 94130164800. Its totient is φ = 5774376960.

The previous prime is 23953121263. The next prime is 23953121303. The reversal of 23953121280 is 8212135932.

23953121280 is a `hidden beast` number, since 2 + 39 + 531 + 2 + 12 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133816231 + ... + 133816409.

It is an arithmetic number, because the mean of its divisors is an integer number (140074650).

Almost surely, 2^23953121280 is an apocalyptic number.

23953121280 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 23953121280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47065082400).

23953121280 is an abundant number, since it is smaller than the sum of its proper divisors (70177043520).

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

23953121280 is a wasteful number, since it uses less digits than its factorization.

23953121280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 23953121280 in words is "twenty-three billion, nine hundred fifty-three million, one hundred twenty-one thousand, two hundred eighty".