1397321983680 has 112 divisors (see below), whose sum is σ = 5070282650880. Its totient is φ = 319387880448.

The previous prime is 1397321983679. The next prime is 1397321983697. The reversal of 1397321983680 is 863891237931.

It is a tau number, because it is divible by the number of its divisors (112).

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 103960690 + ... + 103974129.

Almost surely, 2^{1397321983680} is an apocalyptic number.

1397321983680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1397321983680 is an abundant number, since it is smaller than the sum of its proper divisors (3672960667200).

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

1397321983680 is a wasteful number, since it uses less digits than its factorization.

1397321983680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207934846 (or 207934836 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 60.

The spelling of 1397321983680 in words is "one trillion, three hundred ninety-seven billion, three hundred twenty-one million, nine hundred eighty-three thousand, six hundred eighty".