23557781368 has 24 divisors (see below), whose sum is σ = 48551421240. Its totient is φ = 10708082000.

The previous prime is 23557781363. The next prime is 23557781371. The reversal of 23557781368 is 86318775532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23557781363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12167308 + ... + 12169243.

It is an arithmetic number, because the mean of its divisors is an integer number (2022975885).

Almost surely, 2^23557781368 is an apocalyptic number.

It is an amenable number.

23557781368 is an abundant number, since it is smaller than the sum of its proper divisors (24993639872).

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

23557781368 is a wasteful number, since it uses less digits than its factorization.

23557781368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24336579 (or 24336564 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 55.

The spelling of 23557781368 in words is "twenty-three billion, five hundred fifty-seven million, seven hundred eighty-one thousand, three hundred sixty-eight".