253643323323 has 18 divisors (see below), whose sum is σ = 366223301724. Its totient is φ = 156081220464.

The previous prime is 253643323321. The next prime is 253643323327. The reversal of 253643323323 is 323323346352.

It is not a de Polignac number, because 253643323323 - 2¹ = 253643323321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (253643323321) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11328886 + ... + 11351252.

Almost surely, 2^253643323323 is an apocalyptic number.

253643323323 is a deficient number, since it is larger than the sum of its proper divisors (112579978401).

253643323323 is an frugal number, since it uses more digits than its factorization.

253643323323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44763 (or 22383 counting only the distinct ones).

The product of its digits is 699840, while the sum is 39.

Adding to 253643323323 its reverse (323323346352), we get a palindrome (576966669675).

The spelling of 253643323323 in words is "two hundred fifty-three billion, six hundred forty-three million, three hundred twenty-three thousand, three hundred twenty-three".