23861691504 has 900 divisors, whose sum is σ = 91718071632. Its totient is φ = 5939619840.

The previous prime is 23861691499. The next prime is 23861691533. The reversal of 23861691504 is 40519616832.

23861691504 is a `hidden beast` number, since 2 + 3 + 86 + 1 + 69 + 1 + 504 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 23861691504.

It is a congruent number.

It is an unprimeable number.

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 179 ways as a sum of consecutive naturals, for example, 769731969 + ... + 769731999.

Almost surely, 2^23861691504 is an apocalyptic number.

23861691504 is a gapful number since it is divisible by the number (24) 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 23861691504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45859035816).

23861691504 is an abundant number, since it is smaller than the sum of its proper divisors (67856380128).

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

23861691504 is a wasteful number, since it uses less digits than its factorization.

23861691504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 23861691504 in words is "twenty-three billion, eight hundred sixty-one million, six hundred ninety-one thousand, five hundred four".