79974247997 has 8 divisors (see below), whose sum is σ = 91539113856. Its totient is φ = 68444375472.

The previous prime is 79974247967. The next prime is 79974248021.

It is a happy number.

79974247997 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 79974247997 - 2¹² = 79974243901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79974247967) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8743433 + ... + 8752574.

It is an arithmetic number, because the mean of its divisors is an integer number (11442389232).

Almost surely, 2^79974247997 is an apocalyptic number.

It is an amenable number.

79974247997 is a deficient number, since it is larger than the sum of its proper divisors (11564865859).

79974247997 is a wasteful number, since it uses less digits than its factorization.

79974247997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17496667.

The product of its digits is 504094752, while the sum is 74.

The spelling of 79974247997 in words is "seventy-nine billion, nine hundred seventy-four million, two hundred forty-seven thousand, nine hundred ninety-seven".