77648589228 has 48 divisors (see below), whose sum is σ = 207677410304. Its totient is φ = 22119471360.

The previous prime is 77648589163. The next prime is 77648589229. The reversal of 77648589228 is 82298584677.

It is not an unprimeable number, because it can be changed into a prime (77648589229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1343188 + ... + 1399803.

Almost surely, 2^77648589228 is an apocalyptic number.

It is an amenable number.

77648589228 is an abundant number, since it is smaller than the sum of its proper divisors (130028821076).

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

77648589228 is a wasteful number, since it uses less digits than its factorization.

77648589228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743342 (or 2743340 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 66.

The spelling of 77648589228 in words is "seventy-seven billion, six hundred forty-eight million, five hundred eighty-nine thousand, two hundred twenty-eight".