238578504985 has 8 divisors (see below), whose sum is σ = 303135041736. Its totient is φ = 179635580160.

The previous prime is 238578504973. The next prime is 238578505021. The reversal of 238578504985 is 589405875832.

It can be written as a sum of positive squares in 4 ways, for example, as 112664950336 + 125913554649 = 335656^2 + 354843^2 .

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

It is not a de Polignac number, because 238578504985 - 2⁹ = 238578504473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1403402886 + ... + 1403403055.

It is an arithmetic number, because the mean of its divisors is an integer number (37891880217).

Almost surely, 2^238578504985 is an apocalyptic number.

It is an amenable number.

238578504985 is a deficient number, since it is larger than the sum of its proper divisors (64556536751).

238578504985 is a wasteful number, since it uses less digits than its factorization.

238578504985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806805963.

The product of its (nonzero) digits is 96768000, while the sum is 64.

The spelling of 238578504985 in words is "two hundred thirty-eight billion, five hundred seventy-eight million, five hundred four thousand, nine hundred eighty-five".