23146345649 has 6 divisors (see below), whose sum is σ = 26925340914. Its totient is φ = 19839724800.

The previous prime is 23146345627. The next prime is 23146345667. The reversal of 23146345649 is 94654364132.

It can be written as a sum of positive squares in only one way, i.e., 23124676624 + 21669025 = 152068^2 + 4655^2 .

It is not a de Polignac number, because 23146345649 - 2²⁰ = 23145297073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23146347649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 236187152 + ... + 236187249.

It is an arithmetic number, because the mean of its divisors is an integer number (4487556819).

Almost surely, 2^23146345649 is an apocalyptic number.

It is an amenable number.

23146345649 is a deficient number, since it is larger than the sum of its proper divisors (3778995265).

23146345649 is an equidigital number, since it uses as much as digits as its factorization.

23146345649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472374415 (or 472374408 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 47.

The spelling of 23146345649 in words is "twenty-three billion, one hundred forty-six million, three hundred forty-five thousand, six hundred forty-nine".