126172656115 has 16 divisors (see below), whose sum is σ = 165226010976. Its totient is φ = 91731635200.

The previous prime is 126172656107. The next prime is 126172656143. The reversal of 126172656115 is 511656271621.

It is a happy number.

It is not a de Polignac number, because 126172656115 - 2³ = 126172656107 is a prime.

It is a super-2 number, since 2×126172656115² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

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, 209932 + ... + 544441.

It is an arithmetic number, because the mean of its divisors is an integer number (10326625686).

Almost surely, 2^126172656115 is an apocalyptic number.

126172656115 is a deficient number, since it is larger than the sum of its proper divisors (39053354861).

126172656115 is a wasteful number, since it uses less digits than its factorization.

126172656115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757430.

The product of its digits is 151200, while the sum is 43.

It can be divided in two parts, 126172 and 656115, that added together give a palindrome (782287).

The spelling of 126172656115 in words is "one hundred twenty-six billion, one hundred seventy-two million, six hundred fifty-six thousand, one hundred fifteen".