77284874064 has 40 divisors (see below), whose sum is σ = 200598838432. Its totient is φ = 25639528320.

The previous prime is 77284874039. The next prime is 77284874099. The reversal of 77284874064 is 46047848277.

It is a junction number, because it is equal to n+sod(n) for n = 77284873995 and 77284874013.

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 7 ways as a sum of consecutive naturals, for example, 3805279 + ... + 3825534.

Almost surely, 2^77284874064 is an apocalyptic number.

It is an amenable number.

77284874064 is an abundant number, since it is smaller than the sum of its proper divisors (123313964368).

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

77284874064 is a wasteful number, since it uses less digits than its factorization.

77284874064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631035 (or 7631029 counting only the distinct ones).

The product of its (nonzero) digits is 16859136, while the sum is 57.

The spelling of 77284874064 in words is "seventy-seven billion, two hundred eighty-four million, eight hundred seventy-four thousand, sixty-four".