79771703808 has 160 divisors (see below), whose sum is σ = 219765934080. Its totient is φ = 25686650880.

The previous prime is 79771703807. The next prime is 79771703819. The reversal of 79771703808 is 80830717797.

It is not an unprimeable number, because it can be changed into a prime (79771703807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35187091 + ... + 35189357.

It is an arithmetic number, because the mean of its divisors is an integer number (1373537088).

Almost surely, 2^79771703808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79771703808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109882967040).

79771703808 is an abundant number, since it is smaller than the sum of its proper divisors (139994230272).

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

79771703808 is a wasteful number, since it uses less digits than its factorization.

79771703808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058 (or 3042 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 57.

The spelling of 79771703808 in words is "seventy-nine billion, seven hundred seventy-one million, seven hundred three thousand, eight hundred eight".