21812268768622 has 32 divisors (see below), whose sum is σ = 34167957995520. Its totient is φ = 10430119066080.

The previous prime is 21812268768569. The next prime is 21812268768659. The reversal of 21812268768622 is 22686786221812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42635383 + ... + 43143949.

It is an arithmetic number, because the mean of its divisors is an integer number (1067748687360).

Almost surely, 2^{21812268768622} is an apocalyptic number.

21812268768622 is a deficient number, since it is larger than the sum of its proper divisors (12355689226898).

21812268768622 is a wasteful number, since it uses less digits than its factorization.

21812268768622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515616.

The product of its digits is 24772608, while the sum is 61.

The spelling of 21812268768622 in words is "twenty-one trillion, eight hundred twelve billion, two hundred sixty-eight million, seven hundred sixty-eight thousand, six hundred twenty-two".