79865303420 has 96 divisors (see below), whose sum is σ = 198407664000. Its totient is φ = 26421986304.

The previous prime is 79865303411. The next prime is 79865303443. The reversal of 79865303420 is 2430356897.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7907894 + ... + 7917986.

It is an arithmetic number, because the mean of its divisors is an integer number (2066746500).

Almost surely, 2^79865303420 is an apocalyptic number.

79865303420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a pronic number, being equal to 282604×282605.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79865303420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99203832000).

79865303420 is an abundant number, since it is smaller than the sum of its proper divisors (118542360580).

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

79865303420 is a wasteful number, since it uses less digits than its factorization.

79865303420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12087 (or 12085 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 79865303420 in words is "seventy-nine billion, eight hundred sixty-five million, three hundred three thousand, four hundred twenty".