79132451668 has 6 divisors (see below), whose sum is σ = 138481790426. Its totient is φ = 39566225832.

The previous prime is 79132451647. The next prime is 79132451729. The reversal of 79132451668 is 86615423197.

It can be written as a sum of positive squares in only one way, i.e., 75921189444 + 3211262224 = 275538^2 + 56668^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 9891556455 + ... + 9891556462.

Almost surely, 2^79132451668 is an apocalyptic number.

It is an amenable number.

79132451668 is a deficient number, since it is larger than the sum of its proper divisors (59349338758).

79132451668 is a wasteful number, since it uses less digits than its factorization.

79132451668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19783112921 (or 19783112919 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The spelling of 79132451668 in words is "seventy-nine billion, one hundred thirty-two million, four hundred fifty-one thousand, six hundred sixty-eight".