718409486609 has 16 divisors (see below), whose sum is σ = 775999435200. Its totient is φ = 662887120896.

The previous prime is 718409486603. The next prime is 718409486623. The reversal of 718409486609 is 906684904817.

It is a cyclic number.

It is not a de Polignac number, because 718409486609 - 2²⁴ = 718392709393 is a prime.

It is a super-2 number, since 2×718409486609² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (718409486603) 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, 957104 + ... + 1533905.

It is an arithmetic number, because the mean of its divisors is an integer number (48499964700).

Almost surely, 2^718409486609 is an apocalyptic number.

It is an amenable number.

718409486609 is a deficient number, since it is larger than the sum of its proper divisors (57589948591).

718409486609 is a wasteful number, since it uses less digits than its factorization.

718409486609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491424.

The product of its (nonzero) digits is 20901888, while the sum is 62.

The spelling of 718409486609 in words is "seven hundred eighteen billion, four hundred nine million, four hundred eighty-six thousand, six hundred nine".