69891805489 has 32 divisors (see below), whose sum is σ = 78505820928. Its totient is φ = 61689600000.

The previous prime is 69891805481. The next prime is 69891805541. The reversal of 69891805489 is 98450819896.

It is a cyclic number.

It is not a de Polignac number, because 69891805489 - 2³ = 69891805481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69891805481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13699039 + ... + 13704139.

It is an arithmetic number, because the mean of its divisors is an integer number (2453306904).

Almost surely, 2^69891805489 is an apocalyptic number.

It is an amenable number.

69891805489 is a deficient number, since it is larger than the sum of its proper divisors (8614015439).

69891805489 is a wasteful number, since it uses less digits than its factorization.

69891805489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449.

The product of its (nonzero) digits is 44789760, while the sum is 67.

The spelling of 69891805489 in words is "sixty-nine billion, eight hundred ninety-one million, eight hundred five thousand, four hundred eighty-nine".