80409528549 has 20 divisors (see below), whose sum is σ = 137277644064. Its totient is φ = 45948301704.

The previous prime is 80409528523. The next prime is 80409528571. The reversal of 80409528549 is 94582590408.

It is a happy number.

80409528549 is a `hidden beast` number, since 8 + 0 + 4 + 0 + 95 + 2 + 8 + 549 = 666.

It is not a de Polignac number, because 80409528549 - 2⁷ = 80409528421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80409528495 and 80409528504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80409528509) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70907307 + ... + 70908440.

Almost surely, 2^80409528549 is an apocalyptic number.

It is an amenable number.

80409528549 is a deficient number, since it is larger than the sum of its proper divisors (56868115515).

80409528549 is a wasteful number, since it uses less digits than its factorization.

80409528549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141815766 (or 141815757 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 80409528549 in words is "eighty billion, four hundred nine million, five hundred twenty-eight thousand, five hundred forty-nine".