76647779622 has 12 divisors (see below), whose sum is σ = 166070189220. Its totient is φ = 25549259868.

The previous prime is 76647779617. The next prime is 76647779627. The reversal of 76647779622 is 22697774667.

It is a happy number.

76647779622 is a `hidden beast` number, since 76 + 6 + 477 + 7 + 96 + 2 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (76647779617) and next prime (76647779627).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 76647779622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76647779627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2129104972 + ... + 2129105007.

It is an arithmetic number, because the mean of its divisors is an integer number (13839182435).

Almost surely, 2^76647779622 is an apocalyptic number.

76647779622 is an abundant number, since it is smaller than the sum of its proper divisors (89422409598).

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

76647779622 is a wasteful number, since it uses less digits than its factorization.

76647779622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258209987 (or 4258209984 counting only the distinct ones).

The product of its digits is 74680704, while the sum is 63.

The spelling of 76647779622 in words is "seventy-six billion, six hundred forty-seven million, seven hundred seventy-nine thousand, six hundred twenty-two".