253442452403 has 24 divisors (see below), whose sum is σ = 314793566208. Its totient is φ = 202958932176.

The previous prime is 253442452399. The next prime is 253442452421. The reversal of 253442452403 is 304254244352.

It is not a de Polignac number, because 253442452403 - 2² = 253442452399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253442452423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2566451 + ... + 2663372.

It is an arithmetic number, because the mean of its divisors is an integer number (13116398592).

Almost surely, 2^253442452403 is an apocalyptic number.

253442452403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

253442452403 is a deficient number, since it is larger than the sum of its proper divisors (61351113805).

253442452403 is a wasteful number, since it uses less digits than its factorization.

253442452403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5229903 (or 5229896 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 38.

Adding to 253442452403 its reverse (304254244352), we get a palindrome (557696696755).

The spelling of 253442452403 in words is "two hundred fifty-three billion, four hundred forty-two million, four hundred fifty-two thousand, four hundred three".