80356749792 has 192 divisors, whose sum is σ = 235189785600. Its totient is φ = 23819028480.

The previous prime is 80356749779. The next prime is 80356749793. The reversal of 80356749792 is 29794765308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80356749793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9088798 + ... + 9097634.

It is an arithmetic number, because the mean of its divisors is an integer number (1224946800).

Almost surely, 2^80356749792 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 80356749792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117594892800).

80356749792 is an abundant number, since it is smaller than the sum of its proper divisors (154833035808).

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

80356749792 is a wasteful number, since it uses less digits than its factorization.

80356749792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9049 (or 9041 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 80356749792 in words is "eighty billion, three hundred fifty-six million, seven hundred forty-nine thousand, seven hundred ninety-two".