118509231559 has 8 divisors (see below), whose sum is σ = 119064720512. Its totient is φ = 117954869760.

The previous prime is 118509231479. The next prime is 118509231587. The reversal of 118509231559 is 955132905811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118509231559 - 2³¹ = 116361747911 is a prime.

It is a super-3 number, since 3×118509231559³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118509234559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70647 + ... + 491944.

It is an arithmetic number, because the mean of its divisors is an integer number (14883090064).

Almost surely, 2^118509231559 is an apocalyptic number.

118509231559 is a deficient number, since it is larger than the sum of its proper divisors (555488953).

118509231559 is an equidigital number, since it uses as much as digits as its factorization.

118509231559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563577.

The product of its (nonzero) digits is 486000, while the sum is 49.

The spelling of 118509231559 in words is "one hundred eighteen billion, five hundred nine million, two hundred thirty-one thousand, five hundred fifty-nine".