56405360020646 has 32 divisors (see below), whose sum is σ = 104161339957248. Its totient is φ = 22308129586080.

The previous prime is 56405360020627. The next prime is 56405360020651. The reversal of 56405360020646 is 64602006350465.

It is a happy number.

56405360020646 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 56405360020646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41543750 + ... + 42879993.

It is an arithmetic number, because the mean of its divisors is an integer number (3255041873664).

Almost surely, 2^{56405360020646} is an apocalyptic number.

56405360020646 is a deficient number, since it is larger than the sum of its proper divisors (47755979936602).

56405360020646 is a wasteful number, since it uses less digits than its factorization.

56405360020646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84427436.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 56405360020646 in words is "fifty-six trillion, four hundred five billion, three hundred sixty million, twenty thousand, six hundred forty-six".