79038497666 has 8 divisors (see below), whose sum is σ = 118563083004. Its totient is φ = 39517470000.

The previous prime is 79038497621. The next prime is 79038497669. The reversal of 79038497666 is 66679483097.

It can be written as a sum of positive squares in 2 ways, for example, as 45573283441 + 33465214225 = 213479^2 + 182935^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×79038497666² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79038497669) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 833165 + ... + 923168.

Almost surely, 2^79038497666 is an apocalyptic number.

79038497666 is a deficient number, since it is larger than the sum of its proper divisors (39524585338).

79038497666 is a wasteful number, since it uses less digits than its factorization.

79038497666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778836.

The product of its (nonzero) digits is 82301184, while the sum is 65.

The spelling of 79038497666 in words is "seventy-nine billion, thirty-eight million, four hundred ninety-seven thousand, six hundred sixty-six".