6179145561 has 16 divisors (see below), whose sum is σ = 9161611200. Its totient is φ = 4116135744.

The previous prime is 6179145529. The next prime is 6179145563. The reversal of 6179145561 is 1655419716.

6179145561 is a `hidden beast` number, since 6 + 1 + 7 + 91 + 4 + 556 + 1 = 666.

It is not a de Polignac number, because 6179145561 - 2⁵ = 6179145529 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6179145563) 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, 56896 + ... + 124881.

It is an arithmetic number, because the mean of its divisors is an integer number (572600700).

Almost surely, 2^6179145561 is an apocalyptic number.

It is an amenable number.

6179145561 is a deficient number, since it is larger than the sum of its proper divisors (2982465639).

6179145561 is a wasteful number, since it uses less digits than its factorization.

6179145561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183045 (or 183039 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 6179145561 is about 78607.5413748579. The cubic root of 6179145561 is about 1835.0284785974.

The spelling of 6179145561 in words is "six billion, one hundred seventy-nine million, one hundred forty-five thousand, five hundred sixty-one".