23500770197 has 4 divisors (see below), whose sum is σ = 24073959756. Its totient is φ = 22927580640.

The previous prime is 23500770149. The next prime is 23500770211. The reversal of 23500770197 is 79107700532.

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 4995521041 + 18505249156 = 70679^2 + 136034^2 .

It is a cyclic number.

It is not a de Polignac number, because 23500770197 - 2³⁰ = 22427028373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 573189517 = 23500770197 / (2 + 3 + 5 + 0 + 0 + 7 + 7 + 0 + 1 + 9 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23500790197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286594718 + ... + 286594799.

It is an arithmetic number, because the mean of its divisors is an integer number (6018489939).

Almost surely, 2^23500770197 is an apocalyptic number.

It is an amenable number.

23500770197 is a deficient number, since it is larger than the sum of its proper divisors (573189559).

23500770197 is an equidigital number, since it uses as much as digits as its factorization.

23500770197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573189558.

The product of its (nonzero) digits is 92610, while the sum is 41.

The spelling of 23500770197 in words is "twenty-three billion, five hundred million, seven hundred seventy thousand, one hundred ninety-seven".