778197387088 has 20 divisors (see below), whose sum is σ = 1644826295808. Its totient is φ = 353726084960.

The previous prime is 778197387083. The next prime is 778197387119. The reversal of 778197387088 is 880783791877.

It is a self number, because there is not a number n which added to its sum of digits gives 778197387088.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778197387083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210787856 + ... + 2210788207.

Almost surely, 2^778197387088 is an apocalyptic number.

It is an amenable number.

778197387088 is an abundant number, since it is smaller than the sum of its proper divisors (866628908720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

778197387088 is a wasteful number, since it uses less digits than its factorization.

778197387088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421576082 (or 4421576076 counting only the distinct ones).

The product of its (nonzero) digits is 265531392, while the sum is 73.

The spelling of 778197387088 in words is "seven hundred seventy-eight billion, one hundred ninety-seven million, three hundred eighty-seven thousand, eighty-eight".