23387375881 has 8 divisors (see below), whose sum is σ = 24801037704. Its totient is φ = 21977928960.

The previous prime is 23387375857. The next prime is 23387375929. The reversal of 23387375881 is 18857378332.

It can be written as a sum of positive squares in 4 ways, for example, as 584865856 + 22802510025 = 24184^2 + 151005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23387375881 - 2¹⁷ = 23387244809 is a prime.

It is a super-3 number, since 3×23387375881³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23387375981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1042290 + ... + 1064491.

It is an arithmetic number, because the mean of its divisors is an integer number (3100129713).

Almost surely, 2^23387375881 is an apocalyptic number.

It is an amenable number.

23387375881 is a deficient number, since it is larger than the sum of its proper divisors (1413661823).

23387375881 is a wasteful number, since it uses less digits than its factorization.

23387375881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107451.

The product of its digits is 6773760, while the sum is 55.

The spelling of 23387375881 in words is "twenty-three billion, three hundred eighty-seven million, three hundred seventy-five thousand, eight hundred eighty-one".