778198099089 has 8 divisors (see below), whose sum is σ = 1037637830752. Its totient is φ = 518778550080.

The previous prime is 778198099087. The next prime is 778198099127. The reversal of 778198099089 is 980990891877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 778198099089 - 2¹ = 778198099087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 778198099089.

It is not an unprimeable number, because it can be changed into a prime (778198099087) 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, 4955464 + ... + 5110089.

It is an arithmetic number, because the mean of its divisors is an integer number (129704728844).

Almost surely, 2^778198099089 is an apocalyptic number.

It is an amenable number.

778198099089 is a deficient number, since it is larger than the sum of its proper divisors (259439731663).

778198099089 is a wasteful number, since it uses less digits than its factorization.

778198099089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10091327.

The product of its (nonzero) digits is 164602368, while the sum is 75.

The spelling of 778198099089 in words is "seven hundred seventy-eight billion, one hundred ninety-eight million, ninety-nine thousand, eighty-nine".