5661516155 has 16 divisors (see below), whose sum is σ = 7032856320. Its totient is φ = 4370067072.

The previous prime is 5661516139. The next prime is 5661516173. The reversal of 5661516155 is 5516151665.

It is not a de Polignac number, because 5661516155 - 2⁴ = 5661516139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214757 + ... + 239673.

It is an arithmetic number, because the mean of its divisors is an integer number (439553520).

Almost surely, 2^5661516155 is an apocalyptic number.

5661516155 is a deficient number, since it is larger than the sum of its proper divisors (1371340165).

5661516155 is a wasteful number, since it uses less digits than its factorization.

5661516155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26518.

The product of its digits is 135000, while the sum is 41.

The square root of 5661516155 is about 75243.0472203246. The cubic root of 5661516155 is about 1782.2867712891.

The spelling of 5661516155 in words is "five billion, six hundred sixty-one million, five hundred sixteen thousand, one hundred fifty-five".