2543534137673 has 4 divisors (see below), whose sum is σ = 2568228643968. Its totient is φ = 2518839631380.

The previous prime is 2543534137663. The next prime is 2543534137681. The reversal of 2543534137673 is 3767314353452.

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 2543534137673 - 2⁶ = 2543534137609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2543534137603) 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, 12347252993 + ... + 12347253198.

It is an arithmetic number, because the mean of its divisors is an integer number (642057160992).

Almost surely, 2^{2543534137673} is an apocalyptic number.

It is an amenable number.

2543534137673 is a deficient number, since it is larger than the sum of its proper divisors (24694506295).

2543534137673 is a wasteful number, since it uses less digits than its factorization.

2543534137673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24694506294.

The product of its digits is 19051200, while the sum is 53.

The spelling of 2543534137673 in words is "two trillion, five hundred forty-three billion, five hundred thirty-four million, one hundred thirty-seven thousand, six hundred seventy-three".