780628996368 has 240 divisors, whose sum is σ = 2433379253760. Its totient is φ = 231990220800.

The previous prime is 780628996349. The next prime is 780628996409. The reversal of 780628996368 is 863699826087.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 780628996296 and 780628996305.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30221763 + ... + 30247581.

It is an arithmetic number, because the mean of its divisors is an integer number (10139080224).

Almost surely, 2^780628996368 is an apocalyptic number.

780628996368 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780628996368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1216689626880).

780628996368 is an abundant number, since it is smaller than the sum of its proper divisors (1652750257392).

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

780628996368 is a wasteful number, since it uses less digits than its factorization.

780628996368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26398 (or 26389 counting only the distinct ones).

The product of its (nonzero) digits is 376233984, while the sum is 72.

The spelling of 780628996368 in words is "seven hundred eighty billion, six hundred twenty-eight million, nine hundred ninety-six thousand, three hundred sixty-eight".