21622073365093 has 4 divisors (see below), whose sum is σ = 21622084155180. Its totient is φ = 21622062575008.

The previous prime is 21622073365069. The next prime is 21622073365111. The reversal of 21622073365093 is 39056337022612.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10167794935204 + 11454278429889 = 3188698^2 + 3384417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21622073365093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21622073315093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406128 + ... + 6724681.

It is an arithmetic number, because the mean of its divisors is an integer number (5405521038795).

Almost surely, 2^{21622073365093} is an apocalyptic number.

It is an amenable number.

21622073365093 is a deficient number, since it is larger than the sum of its proper divisors (10790087).

21622073365093 is an equidigital number, since it uses as much as digits as its factorization.

21622073365093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10790086.

The product of its (nonzero) digits is 2449440, while the sum is 49.

The spelling of 21622073365093 in words is "twenty-one trillion, six hundred twenty-two billion, seventy-three million, three hundred sixty-five thousand, ninety-three".