205453523343043 has 4 divisors (see below), whose sum is σ = 205455574102720. Its totient is φ = 205451472583368.

The previous prime is 205453523343007. The next prime is 205453523343059. The reversal of 205453523343043 is 340343325354502.

It is a happy number.

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 205453523343043 - 2⁹ = 205453523342531 is a prime.

It is a super-2 number, since 2×205453523343043² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205453523342984 and 205453523343002.

It is not an unprimeable number, because it can be changed into a prime (205453523343143) 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, 1025229555 + ... + 1025429932.

It is an arithmetic number, because the mean of its divisors is an integer number (51363893525680).

Almost surely, 2^{205453523343043} is an apocalyptic number.

205453523343043 is a deficient number, since it is larger than the sum of its proper divisors (2050759677).

205453523343043 is a wasteful number, since it uses less digits than its factorization.

205453523343043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050759676.

The product of its (nonzero) digits is 7776000, while the sum is 46.

Adding to 205453523343043 its reverse (340343325354502), we get a palindrome (545796848697545).

The spelling of 205453523343043 in words is "two hundred five trillion, four hundred fifty-three billion, five hundred twenty-three million, three hundred forty-three thousand, forty-three".