23470745509 has 2 divisors, whose sum is σ = 23470745510. Its totient is φ = 23470745508.

The previous prime is 23470745503. The next prime is 23470745533. The reversal of 23470745509 is 90554707432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22996812609 + 473932900 = 151647^2 + 21770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23470745509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23470745503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11735372754 + 11735372755.

It is an arithmetic number, because the mean of its divisors is an integer number (11735372755).

Almost surely, 2^23470745509 is an apocalyptic number.

It is an amenable number.

23470745509 is a deficient number, since it is larger than the sum of its proper divisors (1).

23470745509 is an equidigital number, since it uses as much as digits as its factorization.

23470745509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 23470745509 in words is "twenty-three billion, four hundred seventy million, seven hundred forty-five thousand, five hundred nine".