77626056220 has 12 divisors (see below), whose sum is σ = 163014718104. Its totient is φ = 31050422480.

The previous prime is 77626056139. The next prime is 77626056281. The reversal of 77626056220 is 2265062677.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1940651386 + ... + 1940651425.

It is an arithmetic number, because the mean of its divisors is an integer number (13584559842).

Almost surely, 2^77626056220 is an apocalyptic number.

It is an amenable number.

77626056220 is an abundant number, since it is smaller than the sum of its proper divisors (85388661884).

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

77626056220 is a wasteful number, since it uses less digits than its factorization.

77626056220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881302820 (or 3881302818 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 77626056220 in words is "seventy-seven billion, six hundred twenty-six million, fifty-six thousand, two hundred twenty".