997375667399 has 2 divisors, whose sum is σ = 997375667400. Its totient is φ = 997375667398.

The previous prime is 997375667383. The next prime is 997375667413. The reversal of 997375667399 is 993766573799.

997375667399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 997375667399 - 2⁴ = 997375667383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997375637399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498687833699 + 498687833700.

It is an arithmetic number, because the mean of its divisors is an integer number (498687833700).

Almost surely, 2^997375667399 is an apocalyptic number.

997375667399 is a deficient number, since it is larger than the sum of its proper divisors (1).

997375667399 is an equidigital number, since it uses as much as digits as its factorization.

997375667399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3645685260, while the sum is 80.

The spelling of 997375667399 in words is "nine hundred ninety-seven billion, three hundred seventy-five million, six hundred sixty-seven thousand, three hundred ninety-nine".