21390030595799 has 8 divisors (see below), whose sum is σ = 21727823962368. Its totient is φ = 21052782499320.

The previous prime is 21390030595781. The next prime is 21390030595837. The reversal of 21390030595799 is 99759503009312.

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 21390030595799 - 2²⁰ = 21390029547223 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 (21390030895799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136238447 + ... + 136395360.

It is an arithmetic number, because the mean of its divisors is an integer number (2715977995296).

Almost surely, 2^{21390030595799} is an apocalyptic number.

21390030595799 is a deficient number, since it is larger than the sum of its proper divisors (337793366569).

21390030595799 is a wasteful number, since it uses less digits than its factorization.

21390030595799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272635045.

The product of its (nonzero) digits is 20667150, while the sum is 62.

The spelling of 21390030595799 in words is "twenty-one trillion, three hundred ninety billion, thirty million, five hundred ninety-five thousand, seven hundred ninety-nine".