80428669776 has 180 divisors, whose sum is σ = 281979407892. Its totient is φ = 21211932672.

The previous prime is 80428669729. The next prime is 80428669817. The reversal of 80428669776 is 67796682408.

80428669776 is a `hidden beast` number, since 80 + 428 + 6 + 69 + 7 + 76 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24674126400 + 55754543376 = 157080^2 + 236124^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 346681 + ... + 530136.

Almost surely, 2^80428669776 is an apocalyptic number.

It is an amenable number.

80428669776 is an abundant number, since it is smaller than the sum of its proper divisors (201550738116).

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

80428669776 is a wasteful number, since it uses less digits than its factorization.

80428669776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876858 (or 876842 counting only the distinct ones).

The product of its (nonzero) digits is 48771072, while the sum is 63.

The spelling of 80428669776 in words is "eighty billion, four hundred twenty-eight million, six hundred sixty-nine thousand, seven hundred seventy-six".