5661673018 has 8 divisors (see below), whose sum is σ = 8557338240. Its totient is φ = 2809226940.

The previous prime is 5661673009. The next prime is 5661673019. The reversal of 5661673018 is 8103761665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (5661673019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10804458 + ... + 10804981.

It is an arithmetic number, because the mean of its divisors is an integer number (1069667280).

Almost surely, 2^5661673018 is an apocalyptic number.

5661673018 is a deficient number, since it is larger than the sum of its proper divisors (2895665222).

5661673018 is a wasteful number, since it uses less digits than its factorization.

5661673018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21609572.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 5661673018 is about 75244.0895884853. The cubic root of 5661673018 is about 1782.3032316777.

The spelling of 5661673018 in words is "five billion, six hundred sixty-one million, six hundred seventy-three thousand, eighteen".