21622610365 has 16 divisors (see below), whose sum is σ = 26056453248. Its totient is φ = 17225304256.

The previous prime is 21622610263. The next prime is 21622610407. The reversal of 21622610365 is 56301622612.

It is a cyclic number.

It is not a de Polignac number, because 21622610365 - 2²³ = 21614221757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21622610365.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2085384 + ... + 2095726.

It is an arithmetic number, because the mean of its divisors is an integer number (1628528328).

Almost surely, 2^21622610365 is an apocalyptic number.

It is an amenable number.

21622610365 is a deficient number, since it is larger than the sum of its proper divisors (4433842883).

21622610365 is a wasteful number, since it uses less digits than its factorization.

21622610365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12068.

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 21622610365 in words is "twenty-one billion, six hundred twenty-two million, six hundred ten thousand, three hundred sixty-five".