6459789915 has 24 divisors (see below), whose sum is σ = 11206175760. Its totient is φ = 3442388544.

The previous prime is 6459789911. The next prime is 6459789949. The reversal of 6459789915 is 5199879546.

It is not a de Polignac number, because 6459789915 - 2² = 6459789911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6459789911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3097 + ... + 113706.

It is an arithmetic number, because the mean of its divisors is an integer number (466923990).

Almost surely, 2^6459789915 is an apocalyptic number.

6459789915 is a deficient number, since it is larger than the sum of its proper divisors (4746385845).

6459789915 is a wasteful number, since it uses less digits than its factorization.

6459789915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118043 (or 118040 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 63.

The square root of 6459789915 is about 80372.8182596579. The cubic root of 6459789915 is about 1862.3992927245.

The spelling of 6459789915 in words is "six billion, four hundred fifty-nine million, seven hundred eighty-nine thousand, nine hundred fifteen".