3915660390965 has 24 divisors (see below), whose sum is σ = 5066354127744. Its totient is φ = 2899675495200.

The previous prime is 3915660390947. The next prime is 3915660390979. The reversal of 3915660390965 is 5690930665193.

It is not a de Polignac number, because 3915660390965 - 2⁸ = 3915660390709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3915660390898 and 3915660390907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17605001 + ... + 17826030.

It is an arithmetic number, because the mean of its divisors is an integer number (211098088656).

Almost surely, 2^{3915660390965} is an apocalyptic number.

It is an amenable number.

3915660390965 is a deficient number, since it is larger than the sum of its proper divisors (1150693736779).

3915660390965 is a wasteful number, since it uses less digits than its factorization.

3915660390965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35431121 (or 35431090 counting only the distinct ones).

The product of its (nonzero) digits is 35429400, while the sum is 62.

The spelling of 3915660390965 in words is "three trillion, nine hundred fifteen billion, six hundred sixty million, three hundred ninety thousand, nine hundred sixty-five".