3655615286961 has 12 divisors (see below), whose sum is σ = 5760363482640. Its totient is φ = 2215524416280.

The previous prime is 3655615286941. The next prime is 3655615286969. The reversal of 3655615286961 is 1696825165563.

It is a happy number.

3655615286961 is a `hidden beast` number, since 3 + 6 + 5 + 5 + 615 + 2 + 8 + 6 + 9 + 6 + 1 = 666.

3655615286961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3655615286961 - 2¹¹ = 3655615284913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3655615286969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18462703371 + ... + 18462703568.

It is an arithmetic number, because the mean of its divisors is an integer number (480030290220).

Almost surely, 2^{3655615286961} is an apocalyptic number.

It is an amenable number.

3655615286961 is a deficient number, since it is larger than the sum of its proper divisors (2104748195679).

3655615286961 is a wasteful number, since it uses less digits than its factorization.

3655615286961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36925406956 (or 36925406953 counting only the distinct ones).

The product of its digits is 69984000, while the sum is 63.

The spelling of 3655615286961 in words is "three trillion, six hundred fifty-five billion, six hundred fifteen million, two hundred eighty-six thousand, nine hundred sixty-one".