3656638517368 has 16 divisors (see below), whose sum is σ = 6856387699680. Its totient is φ = 1828268464128.

The previous prime is 3656638517351. The next prime is 3656638517419. The reversal of 3656638517368 is 8637158366563.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6042496 + ... + 6620047.

It is an arithmetic number, because the mean of its divisors is an integer number (428524231230).

Almost surely, 2^{3656638517368} is an apocalyptic number.

It is an amenable number.

3656638517368 is a deficient number, since it is larger than the sum of its proper divisors (3199749182312).

3656638517368 is a wasteful number, since it uses less digits than its factorization.

3656638517368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12698646 (or 12698642 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 67.

The spelling of 3656638517368 in words is "three trillion, six hundred fifty-six billion, six hundred thirty-eight million, five hundred seventeen thousand, three hundred sixty-eight".