80740780344 has 128 divisors (see below), whose sum is σ = 256777920000. Its totient is φ = 23027576832.

The previous prime is 80740780343. The next prime is 80740780427. The reversal of 80740780344 is 44308704708.

It is a super-2 number, since 2×80740780344² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80740780344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80740780343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 803832 + ... + 898680.

It is an arithmetic number, because the mean of its divisors is an integer number (2006077500).

Almost surely, 2^80740780344 is an apocalyptic number.

80740780344 is a gapful number since it is divisible by the number (84) 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 80740780344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128388960000).

80740780344 is an abundant number, since it is smaller than the sum of its proper divisors (176037139656).

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

80740780344 is a wasteful number, since it uses less digits than its factorization.

80740780344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95434 (or 95424 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 80740780344 in words is "eighty billion, seven hundred forty million, seven hundred eighty thousand, three hundred forty-four".