18596725679 has 4 divisors (see below), whose sum is σ = 21253400784. Its totient is φ = 15940050576.

The previous prime is 18596725669. The next prime is 18596725711. The reversal of 18596725679 is 97652769581.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97652769581 = 283669 ⋅344249.

It is a cyclic number.

It is not a de Polignac number, because 18596725679 - 2²⁴ = 18579948463 is a prime.

It is a super-2 number, since 2×18596725679² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18596725619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1328337542 + ... + 1328337555.

It is an arithmetic number, because the mean of its divisors is an integer number (5313350196).

Almost surely, 2^18596725679 is an apocalyptic number.

18596725679 is a deficient number, since it is larger than the sum of its proper divisors (2656675105).

18596725679 is an equidigital number, since it uses as much as digits as its factorization.

18596725679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656675104.

The product of its digits is 57153600, while the sum is 65.

The spelling of 18596725679 in words is "eighteen billion, five hundred ninety-six million, seven hundred twenty-five thousand, six hundred seventy-nine".