79649140219 has 8 divisors (see below), whose sum is σ = 86993544960. Its totient is φ = 72321997800.

The previous prime is 79649140211. The next prime is 79649140253. The reversal of 79649140219 is 91204194697.

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 79649140219 - 2³ = 79649140211 is a prime.

It is a super-2 number, since 2×79649140219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79649140211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4305927 + ... + 4324384.

It is an arithmetic number, because the mean of its divisors is an integer number (10874193120).

Almost surely, 2^79649140219 is an apocalyptic number.

79649140219 is a deficient number, since it is larger than the sum of its proper divisors (7344404741).

79649140219 is a wasteful number, since it uses less digits than its factorization.

79649140219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8631161.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 79649140219 in words is "seventy-nine billion, six hundred forty-nine million, one hundred forty thousand, two hundred nineteen".