80327720070 has 144 divisors (see below), whose sum is σ = 228677628816. Its totient is φ = 19447776000.

The previous prime is 80327720047. The next prime is 80327720141. The reversal of 80327720070 is 7002772308.

It is a super-2 number, since 2×80327720070² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4344345 + ... + 4362795.

It is an arithmetic number, because the mean of its divisors is an integer number (1588039089).

Almost surely, 2^80327720070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80327720070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114338814408).

80327720070 is an abundant number, since it is smaller than the sum of its proper divisors (148349908746).

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

80327720070 is a wasteful number, since it uses less digits than its factorization.

80327720070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18599 (or 18535 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The spelling of 80327720070 in words is "eighty billion, three hundred twenty-seven million, seven hundred twenty thousand, seventy".