20642806622 has 16 divisors (see below), whose sum is σ = 32063653440. Its totient is φ = 9955626912.

The previous prime is 20642806621. The next prime is 20642806637. The reversal of 20642806622 is 22660824602.

It is a super-2 number, since 2×20642806622² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20642806621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116918 + ... + 234425.

It is an arithmetic number, because the mean of its divisors is an integer number (2003978340).

Almost surely, 2^20642806622 is an apocalyptic number.

20642806622 is a deficient number, since it is larger than the sum of its proper divisors (11420846818).

20642806622 is a wasteful number, since it uses less digits than its factorization.

20642806622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352387.

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 20642806622 in words is "twenty billion, six hundred forty-two million, eight hundred six thousand, six hundred twenty-two".