3122768157680 has 20 divisors (see below), whose sum is σ = 7260435966792. Its totient is φ = 1249107263040.

The previous prime is 3122768157679. The next prime is 3122768157701. The reversal of 3122768157680 is 867518672213.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19517300906 + ... + 19517301065.

Almost surely, 2^{3122768157680} is an apocalyptic number.

It is an amenable number.

3122768157680 is an abundant number, since it is smaller than the sum of its proper divisors (4137667809112).

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

3122768157680 is a wasteful number, since it uses less digits than its factorization.

3122768157680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39034601984 (or 39034601978 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 3122768157680 in words is "three trillion, one hundred twenty-two billion, seven hundred sixty-eight million, one hundred fifty-seven thousand, six hundred eighty".