3962804662665 has 24 divisors (see below), whose sum is σ = 6933056390208. Its totient is φ = 2093743520160.

The previous prime is 3962804662639. The next prime is 3962804662711. The reversal of 3962804662665 is 5662664082693.

It is a happy number.

3962804662665 is a `hidden beast` number, since 3 + 96 + 2 + 8 + 0 + 466 + 26 + 65 = 666.

It is not a de Polignac number, because 3962804662665 - 2¹² = 3962804658569 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411501381 + ... + 411511010.

It is an arithmetic number, because the mean of its divisors is an integer number (288877349592).

Almost surely, 2^{3962804662665} is an apocalyptic number.

It is an amenable number.

3962804662665 is a deficient number, since it is larger than the sum of its proper divisors (2970251727543).

3962804662665 is a wasteful number, since it uses less digits than its factorization.

3962804662665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823012509 (or 823012506 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 63.

The spelling of 3962804662665 in words is "three trillion, nine hundred sixty-two billion, eight hundred four million, six hundred sixty-two thousand, six hundred sixty-five".