23315042550 has 24 divisors (see below), whose sum is σ = 57821305896. Its totient is φ = 6217344640.

The previous prime is 23315042537. The next prime is 23315042579. The reversal of 23315042550 is 5524051332.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77716659 + ... + 77716958.

It is an arithmetic number, because the mean of its divisors is an integer number (2409221079).

Almost surely, 2^23315042550 is an apocalyptic number.

23315042550 is an abundant number, since it is smaller than the sum of its proper divisors (34506263346).

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

23315042550 is a wasteful number, since it uses less digits than its factorization.

23315042550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155433632 (or 155433627 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 23315042550 its reverse (5524051332), we get a palindrome (28839093882).

The spelling of 23315042550 in words is "twenty-three billion, three hundred fifteen million, forty-two thousand, five hundred fifty".