79340781384 has 24 divisors (see below), whose sum is σ = 214881283110. Its totient is φ = 26446927104.

The previous prime is 79340781383. The next prime is 79340781397. The reversal of 79340781384 is 48318704397.

It can be written as a sum of positive squares in only one way, i.e., 58018356900 + 21322424484 = 240870^2 + 146022^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 79340781384.

It is not an unprimeable number, because it can be changed into a prime (79340781383) 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 5 ways as a sum of consecutive naturals, for example, 550977577 + ... + 550977720.

Almost surely, 2^79340781384 is an apocalyptic number.

It is an amenable number.

79340781384 is an abundant number, since it is smaller than the sum of its proper divisors (135540501726).

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

79340781384 is a wasteful number, since it uses less digits than its factorization.

79340781384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101955309 (or 1101955302 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 79340781384 in words is "seventy-nine billion, three hundred forty million, seven hundred eighty-one thousand, three hundred eighty-four".