253453431345 has 16 divisors (see below), whose sum is σ = 411578111040. Its totient is φ = 133157623104.

The previous prime is 253453431323. The next prime is 253453431379. The reversal of 253453431345 is 543134354352.

It is not a de Polignac number, because 253453431345 - 2²⁷ = 253319213617 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253453431297 and 253453431306.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126095230 + ... + 126097239.

It is an arithmetic number, because the mean of its divisors is an integer number (25723631940).

Almost surely, 2^253453431345 is an apocalyptic number.

It is an amenable number.

253453431345 is a deficient number, since it is larger than the sum of its proper divisors (158124679695).

253453431345 is a wasteful number, since it uses less digits than its factorization.

253453431345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252192544.

The product of its digits is 1296000, while the sum is 42.

Adding to 253453431345 its reverse (543134354352), we get a palindrome (796587785697).

The spelling of 253453431345 in words is "two hundred fifty-three billion, four hundred fifty-three million, four hundred thirty-one thousand, three hundred forty-five".