80428769280 has 336 divisors, whose sum is σ = 293502100320. Its totient is φ = 20317077504.

The previous prime is 80428769251. The next prime is 80428769327. The reversal of 80428769280 is 8296782408.

80428769280 is a `hidden beast` number, since 80 + 4 + 287 + 6 + 9 + 280 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6998419 + ... + 7009901.

Almost surely, 2^80428769280 is an apocalyptic number.

80428769280 is a gapful number since it is divisible by the number (80) 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 80428769280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146751050160).

80428769280 is an abundant number, since it is smaller than the sum of its proper divisors (213073331040).

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

80428769280 is a wasteful number, since it uses less digits than its factorization.

80428769280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11539 (or 11512 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The spelling of 80428769280 in words is "eighty billion, four hundred twenty-eight million, seven hundred sixty-nine thousand, two hundred eighty".