77628326072 has 16 divisors (see below), whose sum is σ = 158785212600. Its totient is φ = 35285602720.

The previous prime is 77628326033. The next prime is 77628326123. The reversal of 77628326072 is 27062382677.

It is a self number, because there is not a number n which added to its sum of digits gives 77628326072.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441069947 + ... + 441070122.

Almost surely, 2^77628326072 is an apocalyptic number.

It is an amenable number.

77628326072 is an abundant number, since it is smaller than the sum of its proper divisors (81156886528).

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

77628326072 is a wasteful number, since it uses less digits than its factorization.

77628326072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882140086 (or 882140082 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 50.

The spelling of 77628326072 in words is "seventy-seven billion, six hundred twenty-eight million, three hundred twenty-six thousand, seventy-two".