169089479999 has 20 divisors (see below), whose sum is σ = 187141001880. Its totient is φ = 152772499440.

The previous prime is 169089479987. The next prime is 169089480037. The reversal of 169089479999 is 999974980961.

It is not a de Polignac number, because 169089479999 - 2³² = 164794512703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169089479939) 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, 2351057 + ... + 2421909.

It is an arithmetic number, because the mean of its divisors is an integer number (9357050094).

Almost surely, 2^169089479999 is an apocalyptic number.

169089479999 is a deficient number, since it is larger than the sum of its proper divisors (18051521881).

169089479999 is an frugal number, since it uses more digits than its factorization.

169089479999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71060 (or 71027 counting only the distinct ones).

The product of its (nonzero) digits is 714256704, while the sum is 80.

The spelling of 169089479999 in words is "one hundred sixty-nine billion, eighty-nine million, four hundred seventy-nine thousand, nine hundred ninety-nine".