985021851263 has 32 divisors (see below), whose sum is σ = 1081751666688. Its totient is φ = 893325888000.

The previous prime is 985021851239. The next prime is 985021851283. The reversal of 985021851263 is 362158120589.

It is a cyclic number.

It is not a de Polignac number, because 985021851263 - 2¹² = 985021847167 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 (985021851283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13255913 + ... + 13330013.

It is an arithmetic number, because the mean of its divisors is an integer number (33804739584).

Almost surely, 2^985021851263 is an apocalyptic number.

985021851263 is a deficient number, since it is larger than the sum of its proper divisors (96729815425).

985021851263 is a wasteful number, since it uses less digits than its factorization.

985021851263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74423.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 985021851263 in words is "nine hundred eighty-five billion, twenty-one million, eight hundred fifty-one thousand, two hundred sixty-three".