238693404505 has 4 divisors (see below), whose sum is σ = 286432085412. Its totient is φ = 190954723600.

The previous prime is 238693404503. The next prime is 238693404539. The reversal of 238693404505 is 505404396832.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27733240089 + 210960164416 = 166533^2 + 459304^2 .

It is not a de Polignac number, because 238693404505 - 2¹ = 238693404503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238693404503) 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, 23869340446 + ... + 23869340455.

It is an arithmetic number, because the mean of its divisors is an integer number (71608021353).

Almost surely, 2^238693404505 is an apocalyptic number.

It is an amenable number.

238693404505 is a deficient number, since it is larger than the sum of its proper divisors (47738680907).

238693404505 is an equidigital number, since it uses as much as digits as its factorization.

238693404505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47738680906.

The product of its (nonzero) digits is 3110400, while the sum is 49.

The spelling of 238693404505 in words is "two hundred thirty-eight billion, six hundred ninety-three million, four hundred four thousand, five hundred five".