79051581720 has 128 divisors (see below), whose sum is σ = 266222174400. Its totient is φ = 20863070208.

The previous prime is 79051581641. The next prime is 79051581733. The reversal of 79051581720 is 2718515097.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 272539 + ... + 482058.

Almost surely, 2^79051581720 is an apocalyptic number.

It is an amenable number.

79051581720 is an abundant number, since it is smaller than the sum of its proper divisors (187170592680).

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

79051581720 is a wasteful number, since it uses less digits than its factorization.

79051581720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754714 (or 754704 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 45.

The spelling of 79051581720 in words is "seventy-nine billion, fifty-one million, five hundred eighty-one thousand, seven hundred twenty".