12415976329 has 3 divisors (see below), whose sum is σ = 12416087757. Its totient is φ = 12415864902.

The previous prime is 12415976297. The next prime is 12415976347. The reversal of 12415976329 is 92367951421.

The square root of 12415976329 is 111427.

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 12415976329 - 2⁵ = 12415976297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12415976029) 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, 55714 + ... + 167140.

It is an arithmetic number, because the mean of its divisors is an integer number (4138695919).

Almost surely, 2^12415976329 is an apocalyptic number.

12415976329 is the 111427-th square number.

12415976329 is the 55714-th centered octagonal number.

It is an amenable number.

12415976329 is a deficient number, since it is larger than the sum of its proper divisors (111428).

12415976329 is an frugal number, since it uses more digits than its factorization.

12415976329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222854 (or 111427 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

Multiplying 12415976329 by its sum of digits (49), we get a square (608382840121 = 779989²).

The spelling of 12415976329 in words is "twelve billion, four hundred fifteen million, nine hundred seventy-six thousand, three hundred twenty-nine".