3105851661 has 64 divisors (see below), whose sum is σ = 5129671680. Its totient is φ = 1841400000.

The previous prime is 3105851647. The next prime is 3105851677. The reversal of 3105851661 is 1661585013.

3105851661 is a `hidden beast` number, since 3 + 1 + 0 + 585 + 16 + 61 = 666.

3105851661 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3105851661 - 2¹⁴ = 3105835277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3105851461) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4547026 + ... + 4547708.

It is an arithmetic number, because the mean of its divisors is an integer number (80151120).

Almost surely, 2^3105851661 is an apocalyptic number.

It is an amenable number.

3105851661 is a deficient number, since it is larger than the sum of its proper divisors (2023820019).

3105851661 is a wasteful number, since it uses less digits than its factorization.

3105851661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 3105851661 is about 55730.1683202195. The cubic root of 3105851661 is about 1459.0166113495.

The spelling of 3105851661 in words is "three billion, one hundred five million, eight hundred fifty-one thousand, six hundred sixty-one".