11611516149 has 6 divisors (see below), whose sum is σ = 16772190006. Its totient is φ = 7741010760.

The previous prime is 11611516099. The next prime is 11611516159. The reversal of 11611516149 is 94161511611.

11611516149 is a `hidden beast` number, since 11 + 611 + 5 + 16 + 14 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9605372049 + 2006144100 = 98007^2 + 44790^2 .

It is not a de Polignac number, because 11611516149 - 2²³ = 11603127541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11611516159) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 645084222 + ... + 645084239.

It is an arithmetic number, because the mean of its divisors is an integer number (2795365001).

Almost surely, 2^11611516149 is an apocalyptic number.

It is an amenable number.

11611516149 is a deficient number, since it is larger than the sum of its proper divisors (5160673857).

11611516149 is a wasteful number, since it uses less digits than its factorization.

11611516149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290168467 (or 1290168464 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The spelling of 11611516149 in words is "eleven billion, six hundred eleven million, five hundred sixteen thousand, one hundred forty-nine".