23272145257 has 4 divisors (see below), whose sum is σ = 24641094996. Its totient is φ = 21903195520.

The previous prime is 23272145251. The next prime is 23272145261. The reversal of 23272145257 is 75254127232.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9683347216 + 13588798041 = 98404^2 + 116571^2 .

It is a cyclic number.

It is not a de Polignac number, because 23272145257 - 2¹⁹ = 23271620969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23272145251) 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, 684474844 + ... + 684474877.

It is an arithmetic number, because the mean of its divisors is an integer number (6160273749).

Almost surely, 2^23272145257 is an apocalyptic number.

It is an amenable number.

23272145257 is a deficient number, since it is larger than the sum of its proper divisors (1368949739).

23272145257 is a wasteful number, since it uses less digits than its factorization.

23272145257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1368949738.

The product of its digits is 235200, while the sum is 40.

The spelling of 23272145257 in words is "twenty-three billion, two hundred seventy-two million, one hundred forty-five thousand, two hundred fifty-seven".