253421477143 has 4 divisors (see below), whose sum is σ = 254385057168. Its totient is φ = 252457897120.

The previous prime is 253421477039. The next prime is 253421477201. The reversal of 253421477143 is 341774124352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253421477143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 253421477143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253421447143) 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, 481789618 + ... + 481790143.

It is an arithmetic number, because the mean of its divisors is an integer number (63596264292).

Almost surely, 2^253421477143 is an apocalyptic number.

253421477143 is a deficient number, since it is larger than the sum of its proper divisors (963580025).

253421477143 is an equidigital number, since it uses as much as digits as its factorization.

253421477143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963580024.

The product of its digits is 564480, while the sum is 43.

The spelling of 253421477143 in words is "two hundred fifty-three billion, four hundred twenty-one million, four hundred seventy-seven thousand, one hundred forty-three".