3307686421656 has 32 divisors (see below), whose sum is σ = 8269264211760. Its totient is φ = 1102555719552.

The previous prime is 3307686421609. The next prime is 3307686421661. The reversal of 3307686421656 is 6561246867033.

It is a junction number, because it is equal to n+sod(n) for n = 3307686421596 and 3307686421605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5696566 + ... + 6250298.

Almost surely, 2^{3307686421656} is an apocalyptic number.

It is an amenable number.

3307686421656 is an abundant number, since it is smaller than the sum of its proper divisors (4961577790104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3307686421656 is a wasteful number, since it uses less digits than its factorization.

3307686421656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802635 (or 802631 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 57.

The spelling of 3307686421656 in words is "three trillion, three hundred seven billion, six hundred eighty-six million, four hundred twenty-one thousand, six hundred fifty-six".