780700078068 has 48 divisors (see below), whose sum is σ = 1928943797760. Its totient is φ = 244905785344.

The previous prime is 780700078031. The next prime is 780700078091. The reversal of 780700078068 is 860870007087.

It is a super-2 number, since 2×780700078068² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 780700078068.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2495980 + ... + 2791292.

It is an arithmetic number, because the mean of its divisors is an integer number (40186329120).

Almost surely, 2^780700078068 is an apocalyptic number.

It is an amenable number.

780700078068 is an abundant number, since it is smaller than the sum of its proper divisors (1148243719692).

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

780700078068 is a wasteful number, since it uses less digits than its factorization.

780700078068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308296 (or 308294 counting only the distinct ones).

The product of its (nonzero) digits is 1053696, while the sum is 51.

The spelling of 780700078068 in words is "seven hundred eighty billion, seven hundred million, seventy-eight thousand, sixty-eight".