80915780736 has 768 divisors, whose sum is σ = 298634947200. Its totient is φ = 21696159744.

The previous prime is 80915780723. The next prime is 80915780797. The reversal of 80915780736 is 63708751908.

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

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 233186515 + ... + 233186861.

Almost surely, 2^80915780736 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 80915780736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149317473600).

80915780736 is an abundant number, since it is smaller than the sum of its proper divisors (217719166464).

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

80915780736 is an equidigital number, since it uses as much as digits as its factorization.

80915780736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 80915780736 in words is "eighty billion, nine hundred fifteen million, seven hundred eighty thousand, seven hundred thirty-six".