918139915959 has 16 divisors (see below), whose sum is σ = 1414790242560. Its totient is φ = 518756420160.

The previous prime is 918139915943. The next prime is 918139915961. The reversal of 918139915959 is 959519931819.

It is not a de Polignac number, because 918139915959 - 2⁴ = 918139915943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 918139915893 and 918139915902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918139915909) 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, 245621437 + ... + 245625174.

It is an arithmetic number, because the mean of its divisors is an integer number (88424390160).

Almost surely, 2^918139915959 is an apocalyptic number.

918139915959 is a deficient number, since it is larger than the sum of its proper divisors (496650326601).

918139915959 is a wasteful number, since it uses less digits than its factorization.

918139915959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491246710.

The product of its digits is 35429400, while the sum is 69.

The spelling of 918139915959 in words is "nine hundred eighteen billion, one hundred thirty-nine million, nine hundred fifteen thousand, nine hundred fifty-nine".