985021851264 has 64 divisors (see below), whose sum is σ = 2854324694880. Its totient is φ = 298491468800.

The previous prime is 985021851239. The next prime is 985021851283. The reversal of 985021851264 is 462158120589.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116594007 + ... + 116602454.

Almost surely, 2^985021851264 is an apocalyptic number.

It is an amenable number.

985021851264 is an abundant number, since it is smaller than the sum of its proper divisors (1869302843616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

985021851264 is a wasteful number, since it uses less digits than its factorization.

985021851264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233196489 (or 233196477 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 985021851264 in words is "nine hundred eighty-five billion, twenty-one million, eight hundred fifty-one thousand, two hundred sixty-four".