3405018686856 has 64 divisors (see below), whose sum is σ = 8523204782400. Its totient is φ = 1133585772288.

The previous prime is 3405018686843. The next prime is 3405018686879. The reversal of 3405018686856 is 6586868105043.

It is a happy number.

3405018686856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3405018686856.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101646846 + ... + 101680338.

It is an arithmetic number, because the mean of its divisors is an integer number (133175074725).

Almost surely, 2^{3405018686856} is an apocalyptic number.

It is an amenable number.

3405018686856 is an abundant number, since it is smaller than the sum of its proper divisors (5118186095544).

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

3405018686856 is a wasteful number, since it uses less digits than its factorization.

3405018686856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38678 (or 38674 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 60.

The spelling of 3405018686856 in words is "three trillion, four hundred five billion, eighteen million, six hundred eighty-six thousand, eight hundred fifty-six".