126971177718 has 32 divisors (see below), whose sum is σ = 316603457280. Its totient is φ = 32979526560.

The previous prime is 126971177657. The next prime is 126971177759. The reversal of 126971177718 is 817771179621.

It is a super-2 number, since 2×126971177718² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent 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, 137414233 + ... + 137415156.

It is an arithmetic number, because the mean of its divisors is an integer number (9893858040).

Almost surely, 2^126971177718 is an apocalyptic number.

126971177718 is an abundant number, since it is smaller than the sum of its proper divisors (189632279562).

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

126971177718 is a wasteful number, since it uses less digits than its factorization.

126971177718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274829412.

The product of its digits is 2074464, while the sum is 57.

The spelling of 126971177718 in words is "one hundred twenty-six billion, nine hundred seventy-one million, one hundred seventy-seven thousand, seven hundred eighteen".