23315772280 has 16 divisors (see below), whose sum is σ = 52460487720. Its totient is φ = 9326308896.

The previous prime is 23315772253. The next prime is 23315772283. The reversal of 23315772280 is 8227751332.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 582894307 = 23315772280 / (2 + 3 + 3 + 1 + 5 + 7 + 7 + 2 + 2 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23315772283) 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, 291447114 + ... + 291447193.

Almost surely, 2^23315772280 is an apocalyptic number.

23315772280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23315772280 is an abundant number, since it is smaller than the sum of its proper divisors (29144715440).

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

23315772280 is a wasteful number, since it uses less digits than its factorization.

23315772280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582894318 (or 582894314 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 23315772280 in words is "twenty-three billion, three hundred fifteen million, seven hundred seventy-two thousand, two hundred eighty".