126116616109 has 16 divisors (see below), whose sum is σ = 150374002176. Its totient is φ = 104426380800.

The previous prime is 126116616089. The next prime is 126116616133. The reversal of 126116616109 is 901616611621.

It is a cyclic number.

It is not a de Polignac number, because 126116616109 - 2²⁵ = 126083061677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126116616139) 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, 10871952 + ... + 10883545.

It is an arithmetic number, because the mean of its divisors is an integer number (9398375136).

Almost surely, 2^126116616109 is an apocalyptic number.

It is an amenable number.

126116616109 is a deficient number, since it is larger than the sum of its proper divisors (24257386067).

126116616109 is a wasteful number, since it uses less digits than its factorization.

126116616109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21755556.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 126116616109 in words is "one hundred twenty-six billion, one hundred sixteen million, six hundred sixteen thousand, one hundred nine".