23781800016 has 80 divisors (see below), whose sum is σ = 73513558720. Its totient is φ = 7317475200.

The previous prime is 23781800011. The next prime is 23781800017. The reversal of 23781800016 is 61000818732.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23781800011) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2111710 + ... + 2122941.

It is an arithmetic number, because the mean of its divisors is an integer number (918919484).

Almost surely, 2^23781800016 is an apocalyptic number.

23781800016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23781800016 is an abundant number, since it is smaller than the sum of its proper divisors (49731758704).

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

23781800016 is a wasteful number, since it uses less digits than its factorization.

23781800016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234681 (or 4234669 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The spelling of 23781800016 in words is "twenty-three billion, seven hundred eighty-one million, eight hundred thousand, sixteen".