126361391312 has 40 divisors (see below), whose sum is σ = 264199506816. Its totient is φ = 58200840576.

The previous prime is 126361391309. The next prime is 126361391333. The reversal of 126361391312 is 213193163621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522428 + ... + 725019.

Almost surely, 2^126361391312 is an apocalyptic number.

It is an amenable number.

126361391312 is an abundant number, since it is smaller than the sum of its proper divisors (137838115504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126361391312 is a wasteful number, since it uses less digits than its factorization.

126361391312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247955 (or 1247949 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The spelling of 126361391312 in words is "one hundred twenty-six billion, three hundred sixty-one million, three hundred ninety-one thousand, three hundred twelve".