977863197799 has 2 divisors, whose sum is σ = 977863197800. Its totient is φ = 977863197798.

The previous prime is 977863197797. The next prime is 977863197821. The reversal of 977863197799 is 997791368779.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 977863197799 - 2¹ = 977863197797 is a prime.

Together with 977863197797, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (977863197797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488931598899 + 488931598900.

It is an arithmetic number, because the mean of its divisors is an integer number (488931598900).

Almost surely, 2^977863197799 is an apocalyptic number.

977863197799 is a deficient number, since it is larger than the sum of its proper divisors (1).

977863197799 is an equidigital number, since it uses as much as digits as its factorization.

977863197799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268426384, while the sum is 82.

The spelling of 977863197799 in words is "nine hundred seventy-seven billion, eight hundred sixty-three million, one hundred ninety-seven thousand, seven hundred ninety-nine".