6668244780972 has 48 divisors (see below), whose sum is σ = 15629985917952. Its totient is φ = 2212642635840.

The previous prime is 6668244780917. The next prime is 6668244781039. The reversal of 6668244780972 is 2790874428666.

It is a junction number, because it is equal to n+sod(n) for n = 6668244780897 and 6668244780906.

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, 48449838 + ... + 48587274.

It is an arithmetic number, because the mean of its divisors is an integer number (325624706624).

Almost surely, 2^{6668244780972} is an apocalyptic number.

It is an amenable number.

6668244780972 is an abundant number, since it is smaller than the sum of its proper divisors (8961741136980).

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

6668244780972 is a wasteful number, since it uses less digits than its factorization.

6668244780972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155798 (or 155796 counting only the distinct ones).

The product of its (nonzero) digits is 390168576, while the sum is 69.

The spelling of 6668244780972 in words is "six trillion, six hundred sixty-eight billion, two hundred forty-four million, seven hundred eighty thousand, nine hundred seventy-two".