779991421034 has 12 divisors (see below), whose sum is σ = 1361005438914. Its totient is φ = 334282037544.

The previous prime is 779991421021. The next prime is 779991421093. The reversal of 779991421034 is 430124199977.

It can be written as a sum of positive squares in only one way, i.e., 432310195009 + 347681226025 = 657503^2 + 589645^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3979547969 + ... + 3979548164.

Almost surely, 2^779991421034 is an apocalyptic number.

779991421034 is a deficient number, since it is larger than the sum of its proper divisors (581014017880).

779991421034 is a wasteful number, since it uses less digits than its factorization.

779991421034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7959096149 (or 7959096142 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 56.

The spelling of 779991421034 in words is "seven hundred seventy-nine billion, nine hundred ninety-one million, four hundred twenty-one thousand, thirty-four".