253344631421 has 16 divisors (see below), whose sum is σ = 289921192704. Its totient is φ = 216864345984.

The previous prime is 253344631343. The next prime is 253344631469. The reversal of 253344631421 is 124136443352.

It is a cyclic number.

It is not a de Polignac number, because 253344631421 - 2¹⁸ = 253344369277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253344631321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35217401 + ... + 35224593.

It is an arithmetic number, because the mean of its divisors is an integer number (18120074544).

Almost surely, 2^253344631421 is an apocalyptic number.

It is an amenable number.

253344631421 is a deficient number, since it is larger than the sum of its proper divisors (36576561283).

253344631421 is a wasteful number, since it uses less digits than its factorization.

253344631421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13180.

The product of its digits is 207360, while the sum is 38.

The spelling of 253344631421 in words is "two hundred fifty-three billion, three hundred forty-four million, six hundred thirty-one thousand, four hundred twenty-one".