18425159716609 has 16 divisors (see below), whose sum is σ = 18579243663360. Its totient is φ = 18271723809040.

The previous prime is 18425159716603. The next prime is 18425159716697. The reversal of 18425159716609 is 90661795152481.

It is not a de Polignac number, because 18425159716609 - 2²⁷ = 18425025498881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18425159716603) 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, 149097204 + ... + 149220730.

It is an arithmetic number, because the mean of its divisors is an integer number (1161202728960).

Almost surely, 2^{18425159716609} is an apocalyptic number.

It is an amenable number.

18425159716609 is a deficient number, since it is larger than the sum of its proper divisors (154083946751).

18425159716609 is a wasteful number, since it uses less digits than its factorization.

18425159716609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126140.

The product of its (nonzero) digits is 32659200, while the sum is 64.

The spelling of 18425159716609 in words is "eighteen trillion, four hundred twenty-five billion, one hundred fifty-nine million, seven hundred sixteen thousand, six hundred nine".