775168983997 has 8 divisors (see below), whose sum is σ = 796165407576. Its totient is φ = 754174976832.

The previous prime is 775168983991. The next prime is 775168984003. The reversal of 775168983997 is 799389861577.

It is an interprime number because it is at equal distance from previous prime (775168983991) and next prime (775168984003).

It can be written as a sum of positive squares in 4 ways, for example, as 24972216676 + 750196767321 = 158026^2 + 866139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 775168983997 - 2³⁹ = 225413170109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775168983991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55803 + ... + 1246375.

It is an arithmetic number, because the mean of its divisors is an integer number (99520675947).

Almost surely, 2^775168983997 is an apocalyptic number.

It is an amenable number.

775168983997 is a deficient number, since it is larger than the sum of its proper divisors (20996423579).

775168983997 is a wasteful number, since it uses less digits than its factorization.

775168983997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208207.

The product of its digits is 1440270720, while the sum is 79.

The spelling of 775168983997 in words is "seven hundred seventy-five billion, one hundred sixty-eight million, nine hundred eighty-three thousand, nine hundred ninety-seven".