23964497536 has 128 divisors (see below), whose sum is σ = 59415408000. Its totient is φ = 9394237440.

The previous prime is 23964497519. The next prime is 23964497549. The reversal of 23964497536 is 63579446932.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 469426 + ... + 517966.

It is an arithmetic number, because the mean of its divisors is an integer number (464182875).

Almost surely, 2^23964497536 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 23964497536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29707704000).

23964497536 is an abundant number, since it is smaller than the sum of its proper divisors (35450910464).

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

23964497536 is a wasteful number, since it uses less digits than its factorization.

23964497536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48610 (or 48598 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 58.

The spelling of 23964497536 in words is "twenty-three billion, nine hundred sixty-four million, four hundred ninety-seven thousand, five hundred thirty-six".