77381685276 has 48 divisors (see below), whose sum is σ = 213007656960. Its totient is φ = 21395856960.

The previous prime is 77381685253. The next prime is 77381685287. The reversal of 77381685276 is 67258618377.

It is a happy number.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14855631 + ... + 14860838.

It is an arithmetic number, because the mean of its divisors is an integer number (4437659520).

Almost surely, 2^77381685276 is an apocalyptic number.

It is an amenable number.

77381685276 is an abundant number, since it is smaller than the sum of its proper divisors (135625971684).

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

77381685276 is a wasteful number, since it uses less digits than its factorization.

77381685276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29716514 (or 29716512 counting only the distinct ones).

The product of its digits is 23708160, while the sum is 60.

The spelling of 77381685276 in words is "seventy-seven billion, three hundred eighty-one million, six hundred eighty-five thousand, two hundred seventy-six".