9919395422599 has 12 divisors (see below), whose sum is σ = 10741420321896. Its totient is φ = 9156109408992.

The previous prime is 9919395422569. The next prime is 9919395422641. The reversal of 9919395422599 is 9952245939199.

It is not a de Polignac number, because 9919395422599 - 2¹³ = 9919395414407 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 (9919395422569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5391769 + ... + 6993565.

It is an arithmetic number, because the mean of its divisors is an integer number (895118360158).

Almost surely, 2^{9919395422599} is an apocalyptic number.

9919395422599 is a deficient number, since it is larger than the sum of its proper divisors (822024899297).

9919395422599 is a wasteful number, since it uses less digits than its factorization.

9919395422599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638466 (or 1638453 counting only the distinct ones).

The product of its digits is 637729200, while the sum is 76.

The spelling of 9919395422599 in words is "nine trillion, nine hundred nineteen billion, three hundred ninety-five million, four hundred twenty-two thousand, five hundred ninety-nine".