21313575340399 has 8 divisors (see below), whose sum is σ = 22240304145792. Its totient is φ = 20386850836440.

The previous prime is 21313575340397. The next prime is 21313575340417. The reversal of 21313575340399 is 99304357531312.

It is a happy number.

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 21313575340399 - 2¹ = 21313575340397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313575340391) 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, 12932604 + ... + 14487214.

It is an arithmetic number, because the mean of its divisors is an integer number (2780038018224).

Almost surely, 2^{21313575340399} is an apocalyptic number.

21313575340399 is a deficient number, since it is larger than the sum of its proper divisors (926728805393).

21313575340399 is a wasteful number, since it uses less digits than its factorization.

21313575340399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150717.

The product of its (nonzero) digits is 9185400, while the sum is 55.

The spelling of 21313575340399 in words is "twenty-one trillion, three hundred thirteen billion, five hundred seventy-five million, three hundred forty thousand, three hundred ninety-nine".