23154400135 has 4 divisors (see below), whose sum is σ = 27785280168. Its totient is φ = 18523520104.

The previous prime is 23154400133. The next prime is 23154400151. The reversal of 23154400135 is 53100445132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23154400135 - 2¹ = 23154400133 is a prime.

It is a super-2 number, since 2×23154400135² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154400133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2315440009 + ... + 2315440018.

It is an arithmetic number, because the mean of its divisors is an integer number (6946320042).

Almost surely, 2^23154400135 is an apocalyptic number.

23154400135 is a deficient number, since it is larger than the sum of its proper divisors (4630880033).

23154400135 is an equidigital number, since it uses as much as digits as its factorization.

23154400135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630880032.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 23154400135 its reverse (53100445132), we get a palindrome (76254845267).

The spelling of 23154400135 in words is "twenty-three billion, one hundred fifty-four million, four hundred thousand, one hundred thirty-five".