80745889536 has 432 divisors, whose sum is σ = 266814553824. Its totient is φ = 23265017856.

The previous prime is 80745889531. The next prime is 80745889661. The reversal of 80745889536 is 63598854708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80745889531) 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 47 ways as a sum of consecutive naturals, for example, 176686620 + ... + 176687076.

It is an arithmetic number, because the mean of its divisors is an integer number (617626282).

Almost surely, 2^80745889536 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 80745889536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133407276912).

80745889536 is an abundant number, since it is smaller than the sum of its proper divisors (186068664288).

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

80745889536 is a wasteful number, since it uses less digits than its factorization.

80745889536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 63.

The spelling of 80745889536 in words is "eighty billion, seven hundred forty-five million, eight hundred eighty-nine thousand, five hundred thirty-six".