8919819878399 has 8 divisors (see below), whose sum is σ = 8921143053312. Its totient is φ = 8918496830880.

The previous prime is 8919819878393. The next prime is 8919819878467. The reversal of 8919819878399 is 9938789189198.

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 8919819878399 - 2⁴ = 8919819878383 is a prime.

It is a super-2 number, since 2×8919819878399² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8919819878393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342359057 + ... + 342385109.

It is an arithmetic number, because the mean of its divisors is an integer number (1115142881664).

Almost surely, 2^{8919819878399} is an apocalyptic number.

8919819878399 is a deficient number, since it is larger than the sum of its proper divisors (1323174913).

8919819878399 is a wasteful number, since it uses less digits than its factorization.

8919819878399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63697.

The product of its digits is 5079158784, while the sum is 89.

The spelling of 8919819878399 in words is "eight trillion, nine hundred nineteen billion, eight hundred nineteen million, eight hundred seventy-eight thousand, three hundred ninety-nine".