253203161623 has 4 divisors (see below), whose sum is σ = 256769403408. Its totient is φ = 249636919840.

The previous prime is 253203161597. The next prime is 253203161639. The reversal of 253203161623 is 326161302352.

253203161623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253203161623 - 2²⁵ = 253169607191 is a prime.

It is a super-2 number, since 2×253203161623² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253203162623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783120786 + ... + 1783120927.

It is an arithmetic number, because the mean of its divisors is an integer number (64192350852).

Almost surely, 2^253203161623 is an apocalyptic number.

253203161623 is a deficient number, since it is larger than the sum of its proper divisors (3566241785).

253203161623 is an equidigital number, since it uses as much as digits as its factorization.

253203161623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3566241784.

The product of its (nonzero) digits is 38880, while the sum is 34.

Adding to 253203161623 its reverse (326161302352), we get a palindrome (579364463975).

The spelling of 253203161623 in words is "two hundred fifty-three billion, two hundred three million, one hundred sixty-one thousand, six hundred twenty-three".