77338887450 has 48 divisors (see below), whose sum is σ = 209236849056. Its totient is φ = 18748820800.

The previous prime is 77338887449. The next prime is 77338887469. The reversal of 77338887450 is 5478883377.

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 23 ways as a sum of consecutive naturals, for example, 23434377 + ... + 23437676.

It is an arithmetic number, because the mean of its divisors is an integer number (4359101022).

Almost surely, 2^77338887450 is an apocalyptic number.

77338887450 is an abundant number, since it is smaller than the sum of its proper divisors (131897961606).

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

77338887450 is a wasteful number, since it uses less digits than its factorization.

77338887450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46872079 (or 46872074 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 60.

The spelling of 77338887450 in words is "seventy-seven billion, three hundred thirty-eight million, eight hundred eighty-seven thousand, four hundred fifty".