659999999899 has 8 divisors (see below), whose sum is σ = 660663540000. Its totient is φ = 659336601792.

The previous prime is 659999999891. The next prime is 659999999921. The reversal of 659999999899 is 998999999956.

659999999899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 659999999899 - 2³ = 659999999891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659999999891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10942677 + ... + 11002825.

It is an arithmetic number, because the mean of its divisors is an integer number (82582942500).

Almost surely, 2^659999999899 is an apocalyptic number.

659999999899 is a deficient number, since it is larger than the sum of its proper divisors (663540101).

659999999899 is a wasteful number, since it uses less digits than its factorization.

659999999899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70997.

The product of its digits is 92980917360, while the sum is 100.

The spelling of 659999999899 in words is "six hundred fifty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, eight hundred ninety-nine".