3105665305661 has 48 divisors (see below), whose sum is σ = 3411783648000. Its totient is φ = 2818656921600.

The previous prime is 3105665305651. The next prime is 3105665305663. The reversal of 3105665305661 is 1665035665013.

It is a happy number.

It is not a de Polignac number, because 3105665305661 - 2⁶ = 3105665305597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3105665305663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 824000585 + ... + 824004353.

It is an arithmetic number, because the mean of its divisors is an integer number (71078826000).

Almost surely, 2^{3105665305661} is an apocalyptic number.

It is an amenable number.

3105665305661 is a deficient number, since it is larger than the sum of its proper divisors (306118342339).

3105665305661 is a wasteful number, since it uses less digits than its factorization.

3105665305661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342 (or 4305 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 47.

The spelling of 3105665305661 in words is "three trillion, one hundred five billion, six hundred sixty-five million, three hundred five thousand, six hundred sixty-one".