126712764331 has 4 divisors (see below), whose sum is σ = 127028756664. Its totient is φ = 126396772000.

The previous prime is 126712764287. The next prime is 126712764341. The reversal of 126712764331 is 133467217621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126712764331 - 2⁷ = 126712764203 is a prime.

It is a super-2 number, since 2×126712764331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126712764341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157995565 + ... + 157996366.

It is an arithmetic number, because the mean of its divisors is an integer number (31757189166).

Almost surely, 2^126712764331 is an apocalyptic number.

126712764331 is a deficient number, since it is larger than the sum of its proper divisors (315992333).

126712764331 is an equidigital number, since it uses as much as digits as its factorization.

126712764331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315992332.

The product of its digits is 254016, while the sum is 43.

The spelling of 126712764331 in words is "one hundred twenty-six billion, seven hundred twelve million, seven hundred sixty-four thousand, three hundred thirty-one".