659719065691 has 16 divisors (see below), whose sum is σ = 793669696000. Its totient is φ = 535696400448.

The previous prime is 659719065683. The next prime is 659719065713. The reversal of 659719065691 is 196560917956.

It is not a de Polignac number, because 659719065691 - 2³ = 659719065683 is a prime.

It is a super-3 number, since 3×659719065691³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659719065601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8269210 + ... + 8348608.

It is an arithmetic number, because the mean of its divisors is an integer number (49604356000).

Almost surely, 2^659719065691 is an apocalyptic number.

659719065691 is a deficient number, since it is larger than the sum of its proper divisors (133950630309).

659719065691 is a wasteful number, since it uses less digits than its factorization.

659719065691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141898.

The product of its (nonzero) digits is 27556200, while the sum is 64.

The spelling of 659719065691 in words is "six hundred fifty-nine billion, seven hundred nineteen million, sixty-five thousand, six hundred ninety-one".