126997838784 has 42 divisors (see below), whose sum is σ = 364016376360. Its totient is φ = 42332612736.

The previous prime is 126997838771. The next prime is 126997838831. The reversal of 126997838784 is 487838799621.

126997838784 is a `hidden beast` number, since 12 + 6 + 99 + 78 + 387 + 84 = 666.

126997838784 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×126997838784² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110240604 + ... + 110241755.

It is an arithmetic number, because the mean of its divisors is an integer number (8667056580).

Almost surely, 2^126997838784 is an apocalyptic number.

It is an amenable number.

126997838784 is an abundant number, since it is smaller than the sum of its proper divisors (237018537576).

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

126997838784 is a wasteful number, since it uses less digits than its factorization.

126997838784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220482377 (or 220482364 counting only the distinct ones).

The product of its digits is 292626432, while the sum is 72.

The spelling of 126997838784 in words is "one hundred twenty-six billion, nine hundred ninety-seven million, eight hundred thirty-eight thousand, seven hundred eighty-four".