2685047355519 has 4 divisors (see below), whose sum is σ = 3580063140696. Its totient is φ = 1790031570344.

The previous prime is 2685047355509. The next prime is 2685047355611. The reversal of 2685047355519 is 9155537405862.

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

It is a cyclic number.

It is not a de Polignac number, because 2685047355519 - 2¹⁵ = 2685047322751 is a prime.

It is a super-2 number, since 2×2685047355519² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685047355509) 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, 447507892584 + ... + 447507892589.

It is an arithmetic number, because the mean of its divisors is an integer number (895015785174).

It is a 1-persistent number, because it is pandigital, but 2⋅2685047355519 = 5370094711038 is not.

Almost surely, 2^{2685047355519} is an apocalyptic number.

2685047355519 is a deficient number, since it is larger than the sum of its proper divisors (895015785177).

2685047355519 is an equidigital number, since it uses as much as digits as its factorization.

2685047355519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895015785176.

The product of its (nonzero) digits is 45360000, while the sum is 60.

The spelling of 2685047355519 in words is "two trillion, six hundred eighty-five billion, forty-seven million, three hundred fifty-five thousand, five hundred nineteen".