253444513140434 has 24 divisors (see below), whose sum is σ = 482437978633008. Its totient is φ = 98744615508840.

The previous prime is 253444513140431. The next prime is 253444513140449. The reversal of 253444513140434 is 434041315444352.

It is not an unprimeable number, because it can be changed into a prime (253444513140431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117553112624 + ... + 117553114779.

It is an arithmetic number, because the mean of its divisors is an integer number (20101582443042).

Almost surely, 2^{253444513140434} is an apocalyptic number.

253444513140434 is a deficient number, since it is larger than the sum of its proper divisors (228993465492574).

253444513140434 is a wasteful number, since it uses less digits than its factorization.

253444513140434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235106227430 (or 235106227423 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 47.

Adding to 253444513140434 its reverse (434041315444352), we get a palindrome (687485828584786).

The spelling of 253444513140434 in words is "two hundred fifty-three trillion, four hundred forty-four billion, five hundred thirteen million, one hundred forty thousand, four hundred thirty-four".