23557638378 has 32 divisors (see below), whose sum is σ = 49910829696. Its totient is φ = 7387066368.

The previous prime is 23557638359. The next prime is 23557638397. The reversal of 23557638378 is 87383675532.

It is an interprime number because it is at equal distance from previous prime (23557638359) and next prime (23557638397).

It is a super-3 number, since 3×23557638378³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160875 + ... + 270177.

It is an arithmetic number, because the mean of its divisors is an integer number (1559713428).

Almost surely, 2^23557638378 is an apocalyptic number.

23557638378 is an abundant number, since it is smaller than the sum of its proper divisors (26353191318).

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

23557638378 is a wasteful number, since it uses less digits than its factorization.

23557638378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111438.

The product of its digits is 25401600, while the sum is 57.

The spelling of 23557638378 in words is "twenty-three billion, five hundred fifty-seven million, six hundred thirty-eight thousand, three hundred seventy-eight".