21362043426643 has 8 divisors (see below), whose sum is σ = 22520314828800. Its totient is φ = 20233095351240.

The previous prime is 21362043426613. The next prime is 21362043426733. The reversal of 21362043426643 is 34662434026312.

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 21362043426643 - 2³³ = 21353453492051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21362043426593 and 21362043426602.

It is not an unprimeable number, because it can be changed into a prime (21362043426613) 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, 7330830193 + ... + 7330833106.

It is an arithmetic number, because the mean of its divisors is an integer number (2815039353600).

Almost surely, 2^{21362043426643} is an apocalyptic number.

21362043426643 is a deficient number, since it is larger than the sum of its proper divisors (1158271402157).

21362043426643 is a wasteful number, since it uses less digits than its factorization.

21362043426643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14661663377.

The product of its (nonzero) digits is 2985984, while the sum is 46.

The spelling of 21362043426643 in words is "twenty-one trillion, three hundred sixty-two billion, forty-three million, four hundred twenty-six thousand, six hundred forty-three".