79776219945 has 8 divisors (see below), whose sum is σ = 127641951936. Its totient is φ = 42547317296.

The previous prime is 79776219937. The next prime is 79776219953. The reversal of 79776219945 is 54991267797.

It is an interprime number because it is at equal distance from previous prime (79776219937) and next prime (79776219953).

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 79776219945 - 2³ = 79776219937 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2659207317 + ... + 2659207346.

It is an arithmetic number, because the mean of its divisors is an integer number (15955243992).

Almost surely, 2^79776219945 is an apocalyptic number.

It is an amenable number.

79776219945 is a deficient number, since it is larger than the sum of its proper divisors (47865731991).

79776219945 is a wasteful number, since it uses less digits than its factorization.

79776219945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5318414671.

The product of its digits is 60011280, while the sum is 66.

The spelling of 79776219945 in words is "seventy-nine billion, seven hundred seventy-six million, two hundred nineteen thousand, nine hundred forty-five".