80719653168 has 400 divisors, whose sum is σ = 292037856000. Its totient is φ = 20911219200.

The previous prime is 80719653127. The next prime is 80719653233. The reversal of 80719653168 is 86135691708.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 49795398 + ... + 49797018.

It is an arithmetic number, because the mean of its divisors is an integer number (730094640).

Almost surely, 2^80719653168 is an apocalyptic number.

80719653168 is a gapful number since it is divisible by the number (88) 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 80719653168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146018928000).

80719653168 is an abundant number, since it is smaller than the sum of its proper divisors (211318202832).

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

80719653168 is a wasteful number, since it uses less digits than its factorization.

80719653168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158 (or 2143 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 80719653168 in words is "eighty billion, seven hundred nineteen million, six hundred fifty-three thousand, one hundred sixty-eight".