10021868784 has 60 divisors (see below), whose sum is σ = 28731411072. Its totient is φ = 3259142400.

The previous prime is 10021868767. The next prime is 10021868809. The reversal of 10021868784 is 48786812001.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 842832 + ... + 854639.

Almost surely, 2^10021868784 is an apocalyptic number.

It is an amenable number.

10021868784 is an abundant number, since it is smaller than the sum of its proper divisors (18709542288).

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

10021868784 is a wasteful number, since it uses less digits than its factorization.

10021868784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697526 (or 1697517 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The spelling of 10021868784 in words is "ten billion, twenty-one million, eight hundred sixty-eight thousand, seven hundred eighty-four".