23807139840 has 896 divisors, whose sum is σ = 98140723200. Its totient is φ = 5414584320.

The previous prime is 23807139823. The next prime is 23807139857. The reversal of 23807139840 is 4893170832.

It is an interprime number because it is at equal distance from previous prime (23807139823) and next prime (23807139857).

It is a super-2 number, since 2×23807139840² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 231137229 + ... + 231137331.

Almost surely, 2^23807139840 is an apocalyptic number.

23807139840 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 23807139840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49070361600).

23807139840 is an abundant number, since it is smaller than the sum of its proper divisors (74333583360).

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

23807139840 is a wasteful number, since it uses less digits than its factorization.

23807139840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 23807139840 in words is "twenty-three billion, eight hundred seven million, one hundred thirty-nine thousand, eight hundred forty".