79790981760 has 768 divisors, whose sum is σ = 331478784000. Its totient is φ = 17291501568.

The previous prime is 79790981719. The next prime is 79790981807. The reversal of 79790981760 is 6718909797.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 128902731 + ... + 128903349.

It is an arithmetic number, because the mean of its divisors is an integer number (431613000).

Almost surely, 2^79790981760 is an apocalyptic number.

79790981760 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79790981760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165739392000).

79790981760 is an abundant number, since it is smaller than the sum of its proper divisors (251687802240).

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

79790981760 is a wasteful number, since it uses less digits than its factorization.

79790981760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 63.

The spelling of 79790981760 in words is "seventy-nine billion, seven hundred ninety million, nine hundred eighty-one thousand, seven hundred sixty".