23498537257 has 8 divisors (see below), whose sum is σ = 25499295360. Its totient is φ = 21525376080.

The previous prime is 23498537239. The next prime is 23498537291. The reversal of 23498537257 is 75273589432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23498537257 - 2⁷ = 23498537129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23498537198 and 23498537207.

It is not an unprimeable number, because it can be changed into a prime (23498537207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6897457 + ... + 6900862.

It is an arithmetic number, because the mean of its divisors is an integer number (3187411920).

Almost surely, 2^23498537257 is an apocalyptic number.

It is an amenable number.

23498537257 is a deficient number, since it is larger than the sum of its proper divisors (2000758103).

23498537257 is a wasteful number, since it uses less digits than its factorization.

23498537257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13798463.

The product of its digits is 12700800, while the sum is 55.

The spelling of 23498537257 in words is "twenty-three billion, four hundred ninety-eight million, five hundred thirty-seven thousand, two hundred fifty-seven".