778794825962 has 4 divisors (see below), whose sum is σ = 1168192238946. Its totient is φ = 389397412980.

The previous prime is 778794825959. The next prime is 778794825989. The reversal of 778794825962 is 269528497877.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 710161829521 + 68632996441 = 842711^2 + 261979^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 778794825962.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194698706489 + ... + 194698706492.

Almost surely, 2^778794825962 is an apocalyptic number.

778794825962 is a deficient number, since it is larger than the sum of its proper divisors (389397412984).

778794825962 is a wasteful number, since it uses less digits than its factorization.

778794825962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389397412983.

The product of its digits is 853493760, while the sum is 74.

The spelling of 778794825962 in words is "seven hundred seventy-eight billion, seven hundred ninety-four million, eight hundred twenty-five thousand, nine hundred sixty-two".