78327079738 has 16 divisors (see below), whose sum is σ = 124150798080. Its totient is φ = 36986588496.

The previous prime is 78327079703. The next prime is 78327079759. The reversal of 78327079738 is 83797072387.

It is a super-2 number, since 2×78327079738² (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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10773345 + ... + 10780612.

It is an arithmetic number, because the mean of its divisors is an integer number (7759424880).

Almost surely, 2^78327079738 is an apocalyptic number.

78327079738 is a deficient number, since it is larger than the sum of its proper divisors (45823718342).

78327079738 is a wasteful number, since it uses less digits than its factorization.

78327079738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21554061.

The product of its (nonzero) digits is 24893568, while the sum is 61.

The spelling of 78327079738 in words is "seventy-eight billion, three hundred twenty-seven million, seventy-nine thousand, seven hundred thirty-eight".