126266567727 has 16 divisors (see below), whose sum is σ = 168868700000. Its totient is φ = 83921163264.

The previous prime is 126266567719. The next prime is 126266567729. The reversal of 126266567727 is 727765662621.

It is a happy number.

It is not a de Polignac number, because 126266567727 - 2³ = 126266567719 is a prime.

It is a super-2 number, since 2×126266567727² (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 (126266567729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10473399 + ... + 10485447.

It is an arithmetic number, because the mean of its divisors is an integer number (10554293750).

Almost surely, 2^126266567727 is an apocalyptic number.

126266567727 is a deficient number, since it is larger than the sum of its proper divisors (42602132273).

126266567727 is a wasteful number, since it uses less digits than its factorization.

126266567727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22410.

The product of its digits is 17781120, while the sum is 57.

The spelling of 126266567727 in words is "one hundred twenty-six billion, two hundred sixty-six million, five hundred sixty-seven thousand, seven hundred twenty-seven".