126209266689 has 16 divisors (see below), whose sum is σ = 183736664064. Its totient is φ = 76423986000.

The previous prime is 126209266669. The next prime is 126209266751. The reversal of 126209266689 is 986662902621.

It is a happy number.

It is not a de Polignac number, because 126209266689 - 2²¹ = 126207169537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126209266669) 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, 1623409 + ... + 1699374.

It is an arithmetic number, because the mean of its divisors is an integer number (11483541504).

Almost surely, 2^126209266689 is an apocalyptic number.

It is an amenable number.

126209266689 is a deficient number, since it is larger than the sum of its proper divisors (57527397375).

126209266689 is a wasteful number, since it uses less digits than its factorization.

126209266689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323948.

The product of its (nonzero) digits is 6718464, while the sum is 57.

The spelling of 126209266689 in words is "one hundred twenty-six billion, two hundred nine million, two hundred sixty-six thousand, six hundred eighty-nine".