253540204043 has 4 divisors (see below), whose sum is σ = 289760233200. Its totient is φ = 217320174888.

The previous prime is 253540203971. The next prime is 253540204081. The reversal of 253540204043 is 340402045352.

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 253540204043 - 2¹² = 253540199947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253540224043) 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, 18110014568 + ... + 18110014581.

It is an arithmetic number, because the mean of its divisors is an integer number (72440058300).

Almost surely, 2^253540204043 is an apocalyptic number.

253540204043 is a deficient number, since it is larger than the sum of its proper divisors (36220029157).

253540204043 is an equidigital number, since it uses as much as digits as its factorization.

253540204043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36220029156.

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 253540204043 its reverse (340402045352), we get a palindrome (593942249395).

The spelling of 253540204043 in words is "two hundred fifty-three billion, five hundred forty million, two hundred four thousand, forty-three".