23555367301538 has 18 divisors (see below), whose sum is σ = 35561162522961. Its totient is φ = 11702131186824.

The previous prime is 23555367301537. The next prime is 23555367301597. The reversal of 23555367301538 is 83510376355532.

It can be written as a sum of positive squares in 2 ways, for example, as 22499872020409 + 1055495281129 = 4743403^2 + 1027373^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3431863.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23555367301537) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1077594053 + ... + 1077615911.

Almost surely, 2^{23555367301538} is an apocalyptic number.

23555367301538 is a deficient number, since it is larger than the sum of its proper divisors (12005795221423).

23555367301538 is an frugal number, since it uses more digits than its factorization.

23555367301538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44034 (or 22018 counting only the distinct ones).

The product of its (nonzero) digits is 34020000, while the sum is 56.

The spelling of 23555367301538 in words is "twenty-three trillion, five hundred fifty-five billion, three hundred sixty-seven million, three hundred one thousand, five hundred thirty-eight".