253568226381 has 4 divisors (see below), whose sum is σ = 338090968512. Its totient is φ = 169045484252.

The previous prime is 253568226341. The next prime is 253568226383. The reversal of 253568226381 is 183622865352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253568226381 - 2⁷ = 253568226253 is a prime.

It is a super-2 number, since 2×253568226381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253568226383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42261371061 + ... + 42261371066.

It is an arithmetic number, because the mean of its divisors is an integer number (84522742128).

Almost surely, 2^253568226381 is an apocalyptic number.

It is an amenable number.

253568226381 is a deficient number, since it is larger than the sum of its proper divisors (84522742131).

253568226381 is an equidigital number, since it uses as much as digits as its factorization.

253568226381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84522742130.

The product of its digits is 4147200, while the sum is 51.

The spelling of 253568226381 in words is "two hundred fifty-three billion, five hundred sixty-eight million, two hundred twenty-six thousand, three hundred eighty-one".