21313433497405 has 8 divisors (see below), whose sum is σ = 29229851653632. Its totient is φ = 14614925826768.

The previous prime is 21313433497403. The next prime is 21313433497483. The reversal of 21313433497405 is 50479433431312.

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 21313433497405 - 2¹ = 21313433497403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313433497403) 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, 304477621357 + ... + 304477621426.

It is an arithmetic number, because the mean of its divisors is an integer number (3653731456704).

Almost surely, 2^{21313433497405} is an apocalyptic number.

It is an amenable number.

21313433497405 is a deficient number, since it is larger than the sum of its proper divisors (7916418156227).

21313433497405 is an equidigital number, since it uses as much as digits as its factorization.

21313433497405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608955242795.

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 21313433497405 in words is "twenty-one trillion, three hundred thirteen billion, four hundred thirty-three million, four hundred ninety-seven thousand, four hundred five".