126726127631 has 8 divisors (see below), whose sum is σ = 132036632064. Its totient is φ = 121492033560.

The previous prime is 126726127613. The next prime is 126726127639. The reversal of 126726127631 is 136721627621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126726127631 - 2³⁴ = 109546258447 is a prime.

It is a super-2 number, since 2×126726127631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126726127639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19099205 + ... + 19105838.

It is an arithmetic number, because the mean of its divisors is an integer number (16504579008).

Almost surely, 2^126726127631 is an apocalyptic number.

126726127631 is a deficient number, since it is larger than the sum of its proper divisors (5310504433).

126726127631 is a wasteful number, since it uses less digits than its factorization.

126726127631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38205181.

The product of its digits is 254016, while the sum is 44.

The spelling of 126726127631 in words is "one hundred twenty-six billion, seven hundred twenty-six million, one hundred twenty-seven thousand, six hundred thirty-one".