347842446085 has 4 divisors (see below), whose sum is σ = 417410935308. Its totient is φ = 278273956864.

The previous prime is 347842446031. The next prime is 347842446151. The reversal of 347842446085 is 580644248743.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 580644248743 = 13 ⋅44664942211.

It can be written as a sum of positive squares in 2 ways, for example, as 173641390209 + 174201055876 = 416703^2 + 417374^2 .

It is a cyclic number.

It is not a de Polignac number, because 347842446085 - 2¹⁹ = 347841921797 is a prime.

It is a super-2 number, since 2×347842446085² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 34784244604 + ... + 34784244613.

It is an arithmetic number, because the mean of its divisors is an integer number (104352733827).

Almost surely, 2^347842446085 is an apocalyptic number.

It is an amenable number.

347842446085 is a deficient number, since it is larger than the sum of its proper divisors (69568489223).

347842446085 is an equidigital number, since it uses as much as digits as its factorization.

347842446085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69568489222.

The product of its (nonzero) digits is 20643840, while the sum is 55.

The spelling of 347842446085 in words is "three hundred forty-seven billion, eight hundred forty-two million, four hundred forty-six thousand, eighty-five".