23907993408 has 168 divisors, whose sum is σ = 75794781608. Its totient is φ = 7157403648.

The previous prime is 23907993353. The next prime is 23907993449. The reversal of 23907993408 is 80439970932.

It can be written as a sum of positive squares in 4 ways, for example, as 145154304 + 23762839104 = 12048^2 + 154152^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233910 + ... + 320202.

Almost surely, 2^23907993408 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 23907993408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37897390804).

23907993408 is an abundant number, since it is smaller than the sum of its proper divisors (51886788200).

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

23907993408 is a wasteful number, since it uses less digits than its factorization.

23907993408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86361 (or 86348 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 23907993408 in words is "twenty-three billion, nine hundred seven million, nine hundred ninety-three thousand, four hundred eight".