21626535442422 has 32 divisors (see below), whose sum is σ = 44702189614080. Its totient is φ = 6967886384160.

The previous prime is 21626535442403. The next prime is 21626535442489. The reversal of 21626535442422 is 22424453562612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69973488 + ... + 70281875.

It is an arithmetic number, because the mean of its divisors is an integer number (1396943425440).

Almost surely, 2^{21626535442422} is an apocalyptic number.

21626535442422 is an abundant number, since it is smaller than the sum of its proper divisors (23075654171658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21626535442422 is a wasteful number, since it uses less digits than its factorization.

21626535442422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140256228.

The product of its digits is 5529600, while the sum is 48.

The spelling of 21626535442422 in words is "twenty-one trillion, six hundred twenty-six billion, five hundred thirty-five million, four hundred forty-two thousand, four hundred twenty-two".