80445209499 has 12 divisors (see below), whose sum is σ = 123033850056. Its totient is φ = 50475425472.

The previous prime is 80445209461. The next prime is 80445209573. The reversal of 80445209499 is 99490254408.

80445209499 is a `hidden beast` number, since 8 + 0 + 445 + 20 + 94 + 99 = 666.

It is not a de Polignac number, because 80445209499 - 2²⁴ = 80428432283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80445209099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262892689 + ... + 262892994.

It is an arithmetic number, because the mean of its divisors is an integer number (10252820838).

Almost surely, 2^80445209499 is an apocalyptic number.

80445209499 is a deficient number, since it is larger than the sum of its proper divisors (42588640557).

80445209499 is a wasteful number, since it uses less digits than its factorization.

80445209499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525785706 (or 525785703 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 80445209499 in words is "eighty billion, four hundred forty-five million, two hundred nine thousand, four hundred ninety-nine".