981599367767 has 8 divisors (see below), whose sum is σ = 991993486176. Its totient is φ = 971210852352.

The previous prime is 981599367751. The next prime is 981599367773. The reversal of 981599367767 is 767763995189.

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 981599367767 - 2⁴ = 981599367751 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 (981599327767) 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, 1048043 + ... + 1749740.

It is an arithmetic number, because the mean of its divisors is an integer number (123999185772).

Almost surely, 2^981599367767 is an apocalyptic number.

981599367767 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

981599367767 is a deficient number, since it is larger than the sum of its proper divisors (10394118409).

981599367767 is a wasteful number, since it uses less digits than its factorization.

981599367767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801497.

The product of its digits is 1080203040, while the sum is 77.

The spelling of 981599367767 in words is "nine hundred eighty-one billion, five hundred ninety-nine million, three hundred sixty-seven thousand, seven hundred sixty-seven".