23136323789 has 2 divisors, whose sum is σ = 23136323790. Its totient is φ = 23136323788.

The previous prime is 23136323767. The next prime is 23136323803. The reversal of 23136323789 is 98732363132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14002698889 + 9133624900 = 118333^2 + 95570^2 .

It is a cyclic number.

It is not a de Polignac number, because 23136323789 - 2¹² = 23136319693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23136023789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11568161894 + 11568161895.

It is an arithmetic number, because the mean of its divisors is an integer number (11568161895).

Almost surely, 2^23136323789 is an apocalyptic number.

It is an amenable number.

23136323789 is a deficient number, since it is larger than the sum of its proper divisors (1).

23136323789 is an equidigital number, since it uses as much as digits as its factorization.

23136323789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 47.

The spelling of 23136323789 in words is "twenty-three billion, one hundred thirty-six million, three hundred twenty-three thousand, seven hundred eighty-nine".