65430489817 has 16 divisors (see below), whose sum is σ = 81591017472. Its totient is φ = 50975208720.

The previous prime is 65430489809. The next prime is 65430489833. The reversal of 65430489817 is 71898403456.

It is a cyclic number.

It is not a de Polignac number, because 65430489817 - 2³ = 65430489809 is a prime.

It is a super-2 number, since 2×65430489817² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65430489617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346888 + ... + 501190.

It is an arithmetic number, because the mean of its divisors is an integer number (5099438592).

Almost surely, 2^65430489817 is an apocalyptic number.

It is an amenable number.

65430489817 is a deficient number, since it is larger than the sum of its proper divisors (16160527655).

65430489817 is a wasteful number, since it uses less digits than its factorization.

65430489817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159828.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 65430489817 in words is "sixty-five billion, four hundred thirty million, four hundred eighty-nine thousand, eight hundred seventeen".