23155082497 has 4 divisors (see below), whose sum is σ = 23591970900. Its totient is φ = 22718194096.

The previous prime is 23155082477. The next prime is 23155082501. The reversal of 23155082497 is 79428055132.

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 8212709376 + 14942373121 = 90624^2 + 122239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23155082497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23155082417) 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, 218444122 + ... + 218444227.

It is an arithmetic number, because the mean of its divisors is an integer number (5897992725).

Almost surely, 2^23155082497 is an apocalyptic number.

It is an amenable number.

23155082497 is a deficient number, since it is larger than the sum of its proper divisors (436888403).

23155082497 is an equidigital number, since it uses as much as digits as its factorization.

23155082497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436888402.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 23155082497 in words is "twenty-three billion, one hundred fifty-five million, eighty-two thousand, four hundred ninety-seven".