780946764064 has 24 divisors (see below), whose sum is σ = 1537561042668. Its totient is φ = 390455070720.

The previous prime is 780946764049. The next prime is 780946764071. The reversal of 780946764064 is 460467649087.

It can be written as a sum of positive squares in 2 ways, for example, as 684292928400 + 96653835664 = 827220^2 + 310892^2 .

It is a junction number, because it is equal to n+sod(n) for n = 780946763993 and 780946764011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134224 + ... + 1256944.

Almost surely, 2^780946764064 is an apocalyptic number.

It is an amenable number.

780946764064 is a deficient number, since it is larger than the sum of its proper divisors (756614278604).

780946764064 is a wasteful number, since it uses less digits than its factorization.

780946764064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144468 (or 1144460 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 61.

The spelling of 780946764064 in words is "seven hundred eighty billion, nine hundred forty-six million, seven hundred sixty-four thousand, sixty-four".