778408082452 has 48 divisors (see below), whose sum is σ = 1828986832512. Its totient is φ = 279946961280.

The previous prime is 778408082429. The next prime is 778408082483. The reversal of 778408082452 is 254280804877.

It is a junction number, because it is equal to n+sod(n) for n = 778408082393 and 778408082402.

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, 97199803 + ... + 97207810.

It is an arithmetic number, because the mean of its divisors is an integer number (38103892344).

Almost surely, 2^778408082452 is an apocalyptic number.

It is an amenable number.

778408082452 is an abundant number, since it is smaller than the sum of its proper divisors (1050578750060).

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

778408082452 is a wasteful number, since it uses less digits than its factorization.

778408082452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194407648 (or 194407646 counting only the distinct ones).

The product of its (nonzero) digits is 8028160, while the sum is 55.

The spelling of 778408082452 in words is "seven hundred seventy-eight billion, four hundred eight million, eighty-two thousand, four hundred fifty-two".