23970161329 has 3 divisors (see below), whose sum is σ = 23970316153. Its totient is φ = 23970006506.

The previous prime is 23970161309. The next prime is 23970161353. The reversal of 23970161329 is 92316107932.

The square root of 23970161329 is 154823.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 23970161329 - 2³³ = 15380226737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23970161309) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 77412 + ... + 232234.

Almost surely, 2^23970161329 is an apocalyptic number.

23970161329 is the 154823-rd square number.

23970161329 is the 77412-nd centered octagonal number.

It is an amenable number.

23970161329 is a deficient number, since it is larger than the sum of its proper divisors (154824).

23970161329 is an frugal number, since it uses more digits than its factorization.

23970161329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309646 (or 154823 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 23970161329 in words is "twenty-three billion, nine hundred seventy million, one hundred sixty-one thousand, three hundred twenty-nine".