27422365621 has 4 divisors (see below), whose sum is σ = 31339846432. Its totient is φ = 23504884812.

The previous prime is 27422365603. The next prime is 27422365631. The reversal of 27422365621 is 12656322472.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27422365621 - 2⁷ = 27422365493 is a prime.

It is a super-2 number, since 2×27422365621² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27422365631) 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, 1958740395 + ... + 1958740408.

It is an arithmetic number, because the mean of its divisors is an integer number (7834961608).

Almost surely, 2^27422365621 is an apocalyptic number.

It is an amenable number.

27422365621 is a deficient number, since it is larger than the sum of its proper divisors (3917480811).

27422365621 is an equidigital number, since it uses as much as digits as its factorization.

27422365621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917480810.

The product of its digits is 241920, while the sum is 40.

The spelling of 27422365621 in words is "twenty-seven billion, four hundred twenty-two million, three hundred sixty-five thousand, six hundred twenty-one".