21626203552441 has 8 divisors (see below), whose sum is σ = 21782024801600. Its totient is φ = 21470385690000.

The previous prime is 21626203552399. The next prime is 21626203552453. The reversal of 21626203552441 is 14425530262612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21626203552441 - 2⁷ = 21626203552313 is a prime.

It is a super-2 number, since 2×21626203552441² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21626203552841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12754780 + ... + 14350498.

It is an arithmetic number, because the mean of its divisors is an integer number (2722753100200).

Almost surely, 2^{21626203552441} is an apocalyptic number.

It is an amenable number.

21626203552441 is a deficient number, since it is larger than the sum of its proper divisors (155821249159).

21626203552441 is a wasteful number, since it uses less digits than its factorization.

21626203552441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693359.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 21626203552441 in words is "twenty-one trillion, six hundred twenty-six billion, two hundred three million, five hundred fifty-two thousand, four hundred forty-one".