8507858385349 has 4 divisors (see below), whose sum is σ = 8801232812460. Its totient is φ = 8214483958240.

The previous prime is 8507858385347. The next prime is 8507858385373. The reversal of 8507858385349 is 9435838587058.

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 3901928608900 + 4605929776449 = 1975330^2 + 2146143^2 .

It is a cyclic number.

It is not a de Polignac number, because 8507858385349 - 2¹ = 8507858385347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8507858385347) 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, 146687213512 + ... + 146687213569.

It is an arithmetic number, because the mean of its divisors is an integer number (2200308203115).

Almost surely, 2^{8507858385349} is an apocalyptic number.

It is an amenable number.

8507858385349 is a deficient number, since it is larger than the sum of its proper divisors (293374427111).

8507858385349 is a wasteful number, since it uses less digits than its factorization.

8507858385349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293374427110.

The product of its (nonzero) digits is 1161216000, while the sum is 73.

The spelling of 8507858385349 in words is "eight trillion, five hundred seven billion, eight hundred fifty-eight million, three hundred eighty-five thousand, three hundred forty-nine".