338589618505 has 4 divisors (see below), whose sum is σ = 406307542212. Its totient is φ = 270871694800.

The previous prime is 338589618421. The next prime is 338589618551. The reversal of 338589618505 is 505816985833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505816985833 = 82903 ⋅6101311.

It can be written as a sum of positive squares in 2 ways, for example, as 186061097104 + 152528521401 = 431348^2 + 390549^2 .

It is not a de Polignac number, because 338589618505 - 2¹⁷ = 338589487433 is a prime.

It is a super-2 number, since 2×338589618505² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33858961846 + ... + 33858961855.

It is an arithmetic number, because the mean of its divisors is an integer number (101576885553).

Almost surely, 2^338589618505 is an apocalyptic number.

It is an amenable number.

338589618505 is a deficient number, since it is larger than the sum of its proper divisors (67717923707).

338589618505 is an equidigital number, since it uses as much as digits as its factorization.

338589618505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67717923706.

The product of its (nonzero) digits is 31104000, while the sum is 61.

The spelling of 338589618505 in words is "three hundred thirty-eight billion, five hundred eighty-nine million, six hundred eighteen thousand, five hundred five".