12571791376 has 15 divisors (see below), whose sum is σ = 24358714783. Its totient is φ = 6285671440.

The previous prime is 12571791373. The next prime is 12571791377. The reversal of 12571791376 is 67319717521.

The square root of 12571791376 is 112124.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12571791371) 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, 434481 + ... + 462511.

Almost surely, 2^12571791376 is an apocalyptic number.

12571791376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12571791376 is the 112124-th square number.

It is an amenable number.

12571791376 is a deficient number, since it is larger than the sum of its proper divisors (11786923407).

12571791376 is an frugal number, since it uses more digits than its factorization.

12571791376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56070 (or 28033 counting only the distinct ones).

The product of its digits is 555660, while the sum is 49.

Multiplying 12571791376 by its sum of digits (49), we get a square (616017777424 = 784868²).

The spelling of 12571791376 in words is "twelve billion, five hundred seventy-one million, seven hundred ninety-one thousand, three hundred seventy-six".