77381122480 has 40 divisors (see below), whose sum is σ = 179977543200. Its totient is φ = 30941019648.

The previous prime is 77381122477. The next prime is 77381122499. The reversal of 77381122480 is 8422118377.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×77381122480² (a number of 23 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 41101 + ... + 395539.

It is an arithmetic number, because the mean of its divisors is an integer number (4499438580).

Almost surely, 2^77381122480 is an apocalyptic number.

It is an amenable number.

77381122480 is an abundant number, since it is smaller than the sum of its proper divisors (102596420720).

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

77381122480 is a wasteful number, since it uses less digits than its factorization.

77381122480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357181 (or 357175 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 77381122480 in words is "seventy-seven billion, three hundred eighty-one million, one hundred twenty-two thousand, four hundred eighty".