126971322868 has 12 divisors (see below), whose sum is σ = 239292108580. Its totient is φ = 58602148992.

The previous prime is 126971322799. The next prime is 126971322887. The reversal of 126971322868 is 868223179621.

It can be written as a sum of positive squares in 2 ways, for example, as 61572467044 + 65398855824 = 248138^2 + 255732^2 .

It is a super-2 number, since 2×126971322868² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220878053 + ... + 1220878156.

Almost surely, 2^126971322868 is an apocalyptic number.

It is an amenable number.

126971322868 is a deficient number, since it is larger than the sum of its proper divisors (112320785712).

126971322868 is a wasteful number, since it uses less digits than its factorization.

126971322868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441756226 (or 2441756224 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 55.

The spelling of 126971322868 in words is "one hundred twenty-six billion, nine hundred seventy-one million, three hundred twenty-two thousand, eight hundred sixty-eight".