23856393616 has 80 divisors (see below), whose sum is σ = 53593712640. Its totient is φ = 10173202560.

The previous prime is 23856393611. The next prime is 23856393637. The reversal of 23856393616 is 61639365832.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23856393611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309801 + ... + 379063.

It is an arithmetic number, because the mean of its divisors is an integer number (669921408).

Almost surely, 2^23856393616 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 23856393616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26796856320).

23856393616 is an abundant number, since it is smaller than the sum of its proper divisors (29737319024).

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

23856393616 is a wasteful number, since it uses less digits than its factorization.

23856393616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69404 (or 69398 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 52.

The spelling of 23856393616 in words is "twenty-three billion, eight hundred fifty-six million, three hundred ninety-three thousand, six hundred sixteen".