77438347610 has 16 divisors (see below), whose sum is σ = 150111258696. Its totient is φ = 28592620608.

The previous prime is 77438347573. The next prime is 77438347681. The reversal of 77438347610 is 1674383477.

It can be written as a sum of positive squares in 4 ways, for example, as 23744652649 + 53693694961 = 154093^2 + 231719^2 .

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, 297839669 + ... + 297839928.

Almost surely, 2^77438347610 is an apocalyptic number.

77438347610 is a deficient number, since it is larger than the sum of its proper divisors (72672911086).

77438347610 is a wasteful number, since it uses less digits than its factorization.

77438347610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595679617.

The product of its (nonzero) digits is 2370816, while the sum is 50.

The spelling of 77438347610 in words is "seventy-seven billion, four hundred thirty-eight million, three hundred forty-seven thousand, six hundred ten".