5661164907 has 24 divisors (see below), whose sum is σ = 8578383840. Its totient is φ = 3592632960.

The previous prime is 5661164891. The next prime is 5661164953. The reversal of 5661164907 is 7094611665.

It is not a de Polignac number, because 5661164907 - 2⁴ = 5661164891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5661164507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134218 + ... + 171279.

It is an arithmetic number, because the mean of its divisors is an integer number (357432660).

Almost surely, 2^5661164907 is an apocalyptic number.

5661164907 is a deficient number, since it is larger than the sum of its proper divisors (2917218933).

5661164907 is a wasteful number, since it uses less digits than its factorization.

5661164907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305603 (or 305600 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 5661164907 is about 75240.7130947069. The cubic root of 5661164907 is about 1782.2499120454.

The spelling of 5661164907 in words is "five billion, six hundred sixty-one million, one hundred sixty-four thousand, nine hundred seven".