23907991700 has 72 divisors (see below), whose sum is σ = 54251527680. Its totient is φ = 9127888000.

The previous prime is 23907991661. The next prime is 23907991747. The reversal of 23907991700 is 719970932.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1090850 + ... + 1112550.

It is an arithmetic number, because the mean of its divisors is an integer number (753493440).

Almost surely, 2^23907991700 is an apocalyptic number.

23907991700 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 23907991700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27125763840).

23907991700 is an abundant number, since it is smaller than the sum of its proper divisors (30343535980).

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

23907991700 is a wasteful number, since it uses less digits than its factorization.

23907991700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22217 (or 22210 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 47.

The spelling of 23907991700 in words is "twenty-three billion, nine hundred seven million, nine hundred ninety-one thousand, seven hundred".