2685136423 has 4 divisors (see below), whose sum is σ = 2686337920. Its totient is φ = 2683934928.

The previous prime is 2685136379. The next prime is 2685136427. The reversal of 2685136423 is 3246315862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3246315862 = 2 ⋅1623157931.

It is a cyclic number.

It is not a de Polignac number, because 2685136423 - 2⁹ = 2685135911 is a prime.

It is a super-2 number, since 2×2685136423² = 14419915220242469858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685136427) 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, 597390 + ... + 601867.

It is an arithmetic number, because the mean of its divisors is an integer number (671584480).

Almost surely, 2^2685136423 is an apocalyptic number.

2685136423 is a deficient number, since it is larger than the sum of its proper divisors (1201497).

2685136423 is a wasteful number, since it uses less digits than its factorization.

2685136423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201496.

The product of its digits is 207360, while the sum is 40.

The square root of 2685136423 is about 51818.3020080743. The cubic root of 2685136423 is about 1389.9167389701.

The spelling of 2685136423 in words is "two billion, six hundred eighty-five million, one hundred thirty-six thousand, four hundred twenty-three".