10021563396 has 144 divisors (see below), whose sum is σ = 27779641344. Its totient is φ = 3027725568.

The previous prime is 10021563389. The next prime is 10021563521. The reversal of 10021563396 is 69336512001.

10021563396 is a `hidden beast` number, since 1 + 0 + 0 + 2 + 1 + 563 + 3 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 10021563396.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6121090 + ... + 6122726.

It is an arithmetic number, because the mean of its divisors is an integer number (192914176).

Almost surely, 2^10021563396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10021563396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13889820672).

10021563396 is an abundant number, since it is smaller than the sum of its proper divisors (17758077948).

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

10021563396 is a wasteful number, since it uses less digits than its factorization.

10021563396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890 (or 1885 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The spelling of 10021563396 in words is "ten billion, twenty-one million, five hundred sixty-three thousand, three hundred ninety-six".