2543523573651 has 4 divisors (see below), whose sum is σ = 3391364764872. Its totient is φ = 1695682382432.

The previous prime is 2543523573641. The next prime is 2543523573667. The reversal of 2543523573651 is 1563753253452.

2543523573651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2543523573651 - 2¹⁰ = 2543523572627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2543523573594 and 2543523573603.

It is not an unprimeable number, because it can be changed into a prime (2543523573641) 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, 423920595606 + ... + 423920595611.

It is an arithmetic number, because the mean of its divisors is an integer number (847841191218).

Almost surely, 2^{2543523573651} is an apocalyptic number.

2543523573651 is a deficient number, since it is larger than the sum of its proper divisors (847841191221).

2543523573651 is an equidigital number, since it uses as much as digits as its factorization.

2543523573651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847841191220.

The product of its digits is 11340000, while the sum is 51.

The spelling of 2543523573651 in words is "two trillion, five hundred forty-three billion, five hundred twenty-three million, five hundred seventy-three thousand, six hundred fifty-one".