20622531361 has 4 divisors (see below), whose sum is σ = 21061308672. Its totient is φ = 20183754052.

The previous prime is 20622531341. The next prime is 20622531373. The reversal of 20622531361 is 16313522602.

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 20622531361 - 2¹⁵ = 20622498593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20622531341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219388585 + ... + 219388678.

It is an arithmetic number, because the mean of its divisors is an integer number (5265327168).

Almost surely, 2^20622531361 is an apocalyptic number.

It is an amenable number.

20622531361 is a deficient number, since it is larger than the sum of its proper divisors (438777311).

20622531361 is an equidigital number, since it uses as much as digits as its factorization.

20622531361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438777310.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 20622531361 in words is "twenty billion, six hundred twenty-two million, five hundred thirty-one thousand, three hundred sixty-one".