997577585575799 has 2 divisors, whose sum is σ = 997577585575800. Its totient is φ = 997577585575798.

The previous prime is 997577585575771. The next prime is 997577585575847. The reversal of 997577585575799 is 997575585775799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997577585575799 - 2¹² = 997577585571703 is a prime.

It is a super-2 number, since 2×997577585575799² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997577585575729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498788792787899 + 498788792787900.

It is an arithmetic number, because the mean of its divisors is an integer number (498788792787900).

Almost surely, 2^{997577585575799} is an apocalyptic number.

997577585575799 is a deficient number, since it is larger than the sum of its proper divisors (1).

997577585575799 is an equidigital number, since it uses as much as digits as its factorization.

997577585575799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2756768175000, while the sum is 104.

The spelling of 997577585575799 in words is "nine hundred ninety-seven trillion, five hundred seventy-seven billion, five hundred eighty-five million, five hundred seventy-five thousand, seven hundred ninety-nine".