126172656116 has 36 divisors (see below), whose sum is σ = 253157794092. Its totient is φ = 54808026624.

The previous prime is 126172656107. The next prime is 126172656143. The reversal of 126172656116 is 611656271621.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 19507708900 + 106664947216 = 139670^2 + 326596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5478095 + ... + 5501078.

It is an arithmetic number, because the mean of its divisors is an integer number (7032160947).

Almost surely, 2^126172656116 is an apocalyptic number.

It is an amenable number.

126172656116 is an abundant number, since it is smaller than the sum of its proper divisors (126985137976).

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

126172656116 is a wasteful number, since it uses less digits than its factorization.

126172656116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10979220 (or 10979205 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The spelling of 126172656116 in words is "one hundred twenty-six billion, one hundred seventy-two million, six hundred fifty-six thousand, one hundred sixteen".