11611605051 has 6 divisors (see below), whose sum is σ = 16772318420. Its totient is φ = 7741070028.

The previous prime is 11611605029. The next prime is 11611605067. The reversal of 11611605051 is 15050611611.

11611605051 is a `hidden beast` number, since 1 + 1 + 6 + 1 + 1 + 605 + 0 + 51 = 666.

It is not a de Polignac number, because 11611605051 - 2³³ = 3021670459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11611605001) 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, 645089161 + ... + 645089178.

Almost surely, 2^11611605051 is an apocalyptic number.

11611605051 is a deficient number, since it is larger than the sum of its proper divisors (5160713369).

11611605051 is a wasteful number, since it uses less digits than its factorization.

11611605051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290178345 (or 1290178342 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 11611605051 in words is "eleven billion, six hundred eleven million, six hundred five thousand, fifty-one".