253403232643 has 8 divisors (see below), whose sum is σ = 276488876736. Its totient is φ = 230325753000.

The previous prime is 253403232623. The next prime is 253403232671. The reversal of 253403232643 is 346232304352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253403232643 - 2⁵ = 253403232611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253403232623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1976121 + ... + 2100442.

It is an arithmetic number, because the mean of its divisors is an integer number (34561109592).

Almost surely, 2^253403232643 is an apocalyptic number.

253403232643 is a deficient number, since it is larger than the sum of its proper divisors (23085644093).

253403232643 is a wasteful number, since it uses less digits than its factorization.

253403232643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082225.

The product of its (nonzero) digits is 311040, while the sum is 37.

Adding to 253403232643 its reverse (346232304352), we get a palindrome (599635536995).

The spelling of 253403232643 in words is "two hundred fifty-three billion, four hundred three million, two hundred thirty-two thousand, six hundred forty-three".