253423619973 has 32 divisors (see below), whose sum is σ = 387604321280. Its totient is φ = 163477647360.

The previous prime is 253423619899. The next prime is 253423619989. The reversal of 253423619973 is 379916324352.

253423619973 is a `hidden beast` number, since 2 + 5 + 3 + 423 + 61 + 99 + 73 = 666.

It is not a de Polignac number, because 253423619973 - 2⁸ = 253423619717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253423612973) 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, 8583765 + ... + 8613237.

It is an arithmetic number, because the mean of its divisors is an integer number (12112635040).

Almost surely, 2^253423619973 is an apocalyptic number.

It is an amenable number.

253423619973 is a deficient number, since it is larger than the sum of its proper divisors (134180701307).

253423619973 is a wasteful number, since it uses less digits than its factorization.

253423619973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39786 (or 39780 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 54.

The spelling of 253423619973 in words is "two hundred fifty-three billion, four hundred twenty-three million, six hundred nineteen thousand, nine hundred seventy-three".