779606547642 has 48 divisors (see below), whose sum is σ = 1898172476928. Its totient is φ = 229449417120.

The previous prime is 779606547529. The next prime is 779606547649. The reversal of 779606547642 is 246745606977.

It is a happy number.

779606547642 is a `hidden beast` number, since 7 + 7 + 9 + 60 + 65 + 476 + 42 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 779606547642.

It is not an unprimeable number, because it can be changed into a prime (779606547649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72421834 + ... + 72432597.

It is an arithmetic number, because the mean of its divisors is an integer number (39545259936).

Almost surely, 2^779606547642 is an apocalyptic number.

779606547642 is an abundant number, since it is smaller than the sum of its proper divisors (1118565929286).

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

779606547642 is a wasteful number, since it uses less digits than its factorization.

779606547642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144854475 (or 144854472 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 63.

The spelling of 779606547642 in words is "seven hundred seventy-nine billion, six hundred six million, five hundred forty-seven thousand, six hundred forty-two".