972981719999 has 2 divisors, whose sum is σ = 972981720000. Its totient is φ = 972981719998.

The previous prime is 972981719921. The next prime is 972981720001. The reversal of 972981719999 is 999917189279.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972981719999 is a prime.

Together with 972981720001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (972981719909) by changing a digit.

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 as a sum of consecutive naturals, namely, 486490859999 + 486490860000.

It is an arithmetic number, because the mean of its divisors is an integer number (486490860000).

Almost surely, 2^972981719999 is an apocalyptic number.

972981719999 is a deficient number, since it is larger than the sum of its proper divisors (1).

972981719999 is an equidigital number, since it uses as much as digits as its factorization.

972981719999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 416649744, while the sum is 80.

The spelling of 972981719999 in words is "nine hundred seventy-two billion, nine hundred eighty-one million, seven hundred nineteen thousand, nine hundred ninety-nine".