253674135543 has 32 divisors (see below), whose sum is σ = 361224129024. Its totient is φ = 157967010432.

The previous prime is 253674135527. The next prime is 253674135587. The reversal of 253674135543 is 345531476352.

It is not a de Polignac number, because 253674135543 - 2⁴ = 253674135527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 253674135492 and 253674135501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253674135503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25431105 + ... + 25441077.

It is an arithmetic number, because the mean of its divisors is an integer number (11288254032).

Almost surely, 2^253674135543 is an apocalyptic number.

253674135543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

253674135543 is a deficient number, since it is larger than the sum of its proper divisors (107549993481).

253674135543 is a wasteful number, since it uses less digits than its factorization.

253674135543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18615.

The product of its digits is 4536000, while the sum is 48.

The spelling of 253674135543 in words is "two hundred fifty-three billion, six hundred seventy-four million, one hundred thirty-five thousand, five hundred forty-three".