2438709321685 has 64 divisors (see below), whose sum is σ = 3721745793024. Its totient is φ = 1492312377600.

The previous prime is 2438709321611. The next prime is 2438709321707. The reversal of 2438709321685 is 5861239078342.

It is a happy number.

It is not a de Polignac number, because 2438709321685 - 2¹¹ = 2438709319637 is a prime.

It is a super-2 number, since 2×2438709321685² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13890822 + ... + 14065288.

It is an arithmetic number, because the mean of its divisors is an integer number (58152278016).

It is a 1-persistent number, because it is pandigital, but 2⋅2438709321685 = 4877418643370 is not.

Almost surely, 2^{2438709321685} is an apocalyptic number.

It is an amenable number.

2438709321685 is a deficient number, since it is larger than the sum of its proper divisors (1283036471339).

2438709321685 is a wasteful number, since it uses less digits than its factorization.

2438709321685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175514.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 2438709321685 in words is "two trillion, four hundred thirty-eight billion, seven hundred nine million, three hundred twenty-one thousand, six hundred eighty-five".