2685723349249 has 4 divisors (see below), whose sum is σ = 2697766951936. Its totient is φ = 2673679746564.

The previous prime is 2685723349237. The next prime is 2685723349297. The reversal of 2685723349249 is 9429433275862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2685723349249 - 2¹⁵ = 2685723316481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2685723349549) 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, 6021801009 + ... + 6021801454.

It is an arithmetic number, because the mean of its divisors is an integer number (674441737984).

Almost surely, 2^{2685723349249} is an apocalyptic number.

It is an amenable number.

2685723349249 is a deficient number, since it is larger than the sum of its proper divisors (12043602687).

2685723349249 is a wasteful number, since it uses less digits than its factorization.

2685723349249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12043602686.

The product of its digits is 156764160, while the sum is 64.

The spelling of 2685723349249 in words is "two trillion, six hundred eighty-five billion, seven hundred twenty-three million, three hundred forty-nine thousand, two hundred forty-nine".