118431628559 has 4 divisors (see below), whose sum is σ = 118435913904. Its totient is φ = 118427343216.

The previous prime is 118431628489. The next prime is 118431628561. The reversal of 118431628559 is 955826134811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118431628559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 118431628559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118431628459) 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, 2100947 + ... + 2156580.

It is an arithmetic number, because the mean of its divisors is an integer number (29608978476).

Almost surely, 2^118431628559 is an apocalyptic number.

118431628559 is a deficient number, since it is larger than the sum of its proper divisors (4285345).

118431628559 is an equidigital number, since it uses as much as digits as its factorization.

118431628559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285344.

The product of its digits is 2073600, while the sum is 53.

The spelling of 118431628559 in words is "one hundred eighteen billion, four hundred thirty-one million, six hundred twenty-eight thousand, five hundred fifty-nine".