20222009856 has 80 divisors (see below), whose sum is σ = 59858594400. Its totient is φ = 6740665344.

The previous prime is 20222009849. The next prime is 20222009861. The reversal of 20222009856 is 65890022202.

It is a super-2 number, since 2×20222009856² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 20222009856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717586 + ... + 745233.

It is an arithmetic number, because the mean of its divisors is an integer number (748232430).

Almost surely, 2^20222009856 is an apocalyptic number.

It is an amenable number.

20222009856 is an abundant number, since it is smaller than the sum of its proper divisors (39636584544).

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

20222009856 is an equidigital number, since it uses as much as digits as its factorization.

20222009856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462846 (or 1462824 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 20222009856 in words is "twenty billion, two hundred twenty-two million, nine thousand, eight hundred fifty-six".