2635540135559 has 4 divisors (see below), whose sum is σ = 2655658762680. Its totient is φ = 2615421508440.

The previous prime is 2635540135549. The next prime is 2635540135589. The reversal of 2635540135559 is 9555310455362.

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 2635540135559 - 2⁸ = 2635540135303 is a prime.

It is a super-2 number, since 2×2635540135559² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2635540135559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2635540135519) 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, 10059313364 + ... + 10059313625.

It is an arithmetic number, because the mean of its divisors is an integer number (663914690670).

Almost surely, 2^{2635540135559} is an apocalyptic number.

2635540135559 is a deficient number, since it is larger than the sum of its proper divisors (20118627121).

2635540135559 is a wasteful number, since it uses less digits than its factorization.

2635540135559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20118627120.

The product of its (nonzero) digits is 12150000, while the sum is 53.

The spelling of 2635540135559 in words is "two trillion, six hundred thirty-five billion, five hundred forty million, one hundred thirty-five thousand, five hundred fifty-nine".