79819686948 has 24 divisors (see below), whose sum is σ = 186250875552. Its totient is φ = 26605856704.

The previous prime is 79819686931. The next prime is 79819686949. The reversal of 79819686948 is 84968691897.

It is a self number, because there is not a number n which added to its sum of digits gives 79819686948.

It is not an unprimeable number, because it can be changed into a prime (79819686949) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 594511 + ... + 716297.

It is an arithmetic number, because the mean of its divisors is an integer number (7760453148).

Almost surely, 2^79819686948 is an apocalyptic number.

It is an amenable number.

79819686948 is an abundant number, since it is smaller than the sum of its proper divisors (106431188604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79819686948 is a wasteful number, since it uses less digits than its factorization.

79819686948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176411 (or 176409 counting only the distinct ones).

The product of its digits is 376233984, while the sum is 75.

The spelling of 79819686948 in words is "seventy-nine billion, eight hundred nineteen million, six hundred eighty-six thousand, nine hundred forty-eight".