79491619497 has 8 divisors (see below), whose sum is σ = 106011257440. Its totient is φ = 52983197280.

The previous prime is 79491619447. The next prime is 79491619609.

79491619497 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 79491619497 - 2⁶ = 79491619433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79491619447) 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, 2787379 + ... + 2815752.

It is an arithmetic number, because the mean of its divisors is an integer number (13251407180).

Almost surely, 2^79491619497 is an apocalyptic number.

It is an amenable number.

79491619497 is a deficient number, since it is larger than the sum of its proper divisors (26519637943).

79491619497 is a wasteful number, since it uses less digits than its factorization.

79491619497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5607863.

The product of its digits is 30862944, while the sum is 66.

The spelling of 79491619497 in words is "seventy-nine billion, four hundred ninety-one million, six hundred nineteen thousand, four hundred ninety-seven".