23257947733 has 4 divisors (see below), whose sum is σ = 23258282220. Its totient is φ = 23257613248.

The previous prime is 23257947721. The next prime is 23257947773. The reversal of 23257947733 is 33774975232.

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 18425890564 + 4832057169 = 135742^2 + 69513^2 .

It is a cyclic number.

It is not a de Polignac number, because 23257947733 - 2⁵ = 23257947701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23257947773) 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, 19348 + ... + 216541.

It is an arithmetic number, because the mean of its divisors is an integer number (5814570555).

Almost surely, 2^23257947733 is an apocalyptic number.

It is an amenable number.

23257947733 is a deficient number, since it is larger than the sum of its proper divisors (334487).

23257947733 is an equidigital number, since it uses as much as digits as its factorization.

23257947733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334486.

The product of its digits is 6667920, while the sum is 52.

The spelling of 23257947733 in words is "twenty-three billion, two hundred fifty-seven million, nine hundred forty-seven thousand, seven hundred thirty-three".