126138237157864 has 64 divisors (see below), whose sum is σ = 256653561729600. Its totient is φ = 57921092236800.

The previous prime is 126138237157843. The next prime is 126138237157879. The reversal of 126138237157864 is 468751732831621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 126138237157796 and 126138237157805.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63481482 + ... + 65438329.

It is an arithmetic number, because the mean of its divisors is an integer number (4010211902025).

Almost surely, 2^{126138237157864} is an apocalyptic number.

It is an amenable number.

126138237157864 is an abundant number, since it is smaller than the sum of its proper divisors (130515324571736).

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

126138237157864 is a wasteful number, since it uses less digits than its factorization.

126138237157864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128920034 (or 128920030 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 64.

The spelling of 126138237157864 in words is "one hundred twenty-six trillion, one hundred thirty-eight billion, two hundred thirty-seven million, one hundred fifty-seven thousand, eight hundred sixty-four".