76779643641222 has 64 divisors (see below), whose sum is σ = 156811563417600. Its totient is φ = 25056253800864.

The previous prime is 76779643641199. The next prime is 76779643641251. The reversal of 76779643641222 is 22214634697767.

It is a super-2 number, since 2×76779643641222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 52983033 + ... + 54412875.

It is an arithmetic number, because the mean of its divisors is an integer number (2450180678400).

Almost surely, 2^{76779643641222} is an apocalyptic number.

76779643641222 is an abundant number, since it is smaller than the sum of its proper divisors (80031919776378).

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

76779643641222 is a wasteful number, since it uses less digits than its factorization.

76779643641222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430737.

The product of its digits is 256048128, while the sum is 66.

The spelling of 76779643641222 in words is "seventy-six trillion, seven hundred seventy-nine billion, six hundred forty-three million, six hundred forty-one thousand, two hundred twenty-two".