21359075099 has 8 divisors (see below), whose sum is σ = 22097311920. Its totient is φ = 20620952800.

The previous prime is 21359075071. The next prime is 21359075107. The reversal of 21359075099 is 99057095312.

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 21359075099 - 2⁸ = 21359074843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21359077099) 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, 547844 + ... + 585534.

It is an arithmetic number, because the mean of its divisors is an integer number (2762163990).

Almost surely, 2^21359075099 is an apocalyptic number.

21359075099 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21359075099 is a deficient number, since it is larger than the sum of its proper divisors (738236821).

21359075099 is a wasteful number, since it uses less digits than its factorization.

21359075099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57261.

The product of its (nonzero) digits is 765450, while the sum is 50.

The spelling of 21359075099 in words is "twenty-one billion, three hundred fifty-nine million, seventy-five thousand, ninety-nine".