1321677045684 has 72 divisors (see below), whose sum is σ = 3474084501888. Its totient is φ = 439358463360.

The previous prime is 1321677045659. The next prime is 1321677045691. The reversal of 1321677045684 is 4865407761231.

1321677045684 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 6 + 7 + 70 + 4 + 568 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1321677045684.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1495797 + ... + 2209244.

Almost surely, 2^{1321677045684} is an apocalyptic number.

It is an amenable number.

1321677045684 is an abundant number, since it is smaller than the sum of its proper divisors (2152407456204).

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

1321677045684 is a wasteful number, since it uses less digits than its factorization.

1321677045684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3705427 (or 3705413 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 1321677045684 in words is "one trillion, three hundred twenty-one billion, six hundred seventy-seven million, forty-five thousand, six hundred eighty-four".