77776082880 has 56 divisors (see below), whose sum is σ = 246939066192. Its totient is φ = 20740288512.

The previous prime is 77776082861. The next prime is 77776082911. The reversal of 77776082880 is 8828067777.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 40507417 + ... + 40509336.

It is an arithmetic number, because the mean of its divisors is an integer number (4409626182).

Almost surely, 2^77776082880 is an apocalyptic number.

It is an amenable number.

77776082880 is an abundant number, since it is smaller than the sum of its proper divisors (169162983312).

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

77776082880 is a wasteful number, since it uses less digits than its factorization.

77776082880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81016773 (or 81016763 counting only the distinct ones).

The product of its (nonzero) digits is 14751744, while the sum is 60.

The spelling of 77776082880 in words is "seventy-seven billion, seven hundred seventy-six million, eighty-two thousand, eight hundred eighty".