985131280799 has 4 divisors (see below), whose sum is σ = 1006091520864. Its totient is φ = 964171040736.

The previous prime is 985131280789. The next prime is 985131280823. The reversal of 985131280799 is 997082131589.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 985131280799 - 2⁸ = 985131280543 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 (985131280759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10480119962 + ... + 10480120055.

It is an arithmetic number, because the mean of its divisors is an integer number (251522880216).

Almost surely, 2^985131280799 is an apocalyptic number.

985131280799 is a deficient number, since it is larger than the sum of its proper divisors (20960240065).

985131280799 is a wasteful number, since it uses less digits than its factorization.

985131280799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20960240064.

The product of its (nonzero) digits is 9797760, while the sum is 62.

The spelling of 985131280799 in words is "nine hundred eighty-five billion, one hundred thirty-one million, two hundred eighty thousand, seven hundred ninety-nine".