80464969728 has 720 divisors, whose sum is σ = 287757516816. Its totient is φ = 22083010560.

The previous prime is 80464969703. The next prime is 80464969729. The reversal of 80464969728 is 82796946408.

80464969728 is a `hidden beast` number, since 80 + 46 + 496 + 9 + 7 + 28 = 666.

It is a super-2 number, since 2×80464969728² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80464969729) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1518206950 + ... + 1518207002.

Almost surely, 2^80464969728 is an apocalyptic number.

80464969728 is a gapful number since it is divisible by the number (88) 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 80464969728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143878758408).

80464969728 is an abundant number, since it is smaller than the sum of its proper divisors (207292547088).

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

80464969728 is an equidigital number, since it uses as much as digits as its factorization.

80464969728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 80464969728 in words is "eighty billion, four hundred sixty-four million, nine hundred sixty-nine thousand, seven hundred twenty-eight".