20021840182 has 16 divisors (see below), whose sum is σ = 30163306320. Its totient is φ = 9967491072.

The previous prime is 20021840173. The next prime is 20021840221. The reversal of 20021840182 is 28104812002.

It is a self number, because there is not a number n which added to its sum of digits gives 20021840182.

It is a congruent number.

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, 454069 + ... + 496207.

It is an arithmetic number, because the mean of its divisors is an integer number (1885206645).

Almost surely, 2^20021840182 is an apocalyptic number.

20021840182 is a deficient number, since it is larger than the sum of its proper divisors (10141466138).

20021840182 is a wasteful number, since it uses less digits than its factorization.

20021840182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43167.

The product of its (nonzero) digits is 2048, while the sum is 28.

The spelling of 20021840182 in words is "twenty billion, twenty-one million, eight hundred forty thousand, one hundred eighty-two".