778618487260 has 12 divisors (see below), whose sum is σ = 1635098823288. Its totient is φ = 311447394896.

The previous prime is 778618487249. The next prime is 778618487299. The reversal of 778618487260 is 62784816877.

It is a junction number, because it is equal to n+sod(n) for n = 778618487192 and 778618487201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19465462162 + ... + 19465462201.

It is an arithmetic number, because the mean of its divisors is an integer number (136258235274).

Almost surely, 2^778618487260 is an apocalyptic number.

It is an amenable number.

778618487260 is an abundant number, since it is smaller than the sum of its proper divisors (856480336028).

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

778618487260 is a wasteful number, since it uses less digits than its factorization.

778618487260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38930924372 (or 38930924370 counting only the distinct ones).

The product of its (nonzero) digits is 50577408, while the sum is 64.

The spelling of 778618487260 in words is "seven hundred seventy-eight billion, six hundred eighteen million, four hundred eighty-seven thousand, two hundred sixty".