78835334267972 has 12 divisors (see below), whose sum is σ = 137961958031100. Its totient is φ = 39417631973376.

The previous prime is 78835334267903. The next prime is 78835334268001. The reversal of 78835334267972 is 27976243353887.

It can be written as a sum of positive squares in 2 ways, for example, as 27720498780676 + 51114835487296 = 5265026^2 + 7149464^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78835334267972.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3374597 + ... + 13002252.

It is an arithmetic number, because the mean of its divisors is an integer number (11496829835925).

Almost surely, 2^{78835334267972} is an apocalyptic number.

It is an amenable number.

78835334267972 is a deficient number, since it is larger than the sum of its proper divisors (59126623763128).

78835334267972 is a wasteful number, since it uses less digits than its factorization.

78835334267972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17580310 (or 17580308 counting only the distinct ones).

The product of its digits is 2560481280, while the sum is 74.

The spelling of 78835334267972 in words is "seventy-eight trillion, eight hundred thirty-five billion, three hundred thirty-four million, two hundred sixty-seven thousand, nine hundred seventy-two".