245653444253 has 12 divisors (see below), whose sum is σ = 285864539292. Its totient is φ = 210483161280.

The previous prime is 245653444247. The next prime is 245653444301. The reversal of 245653444253 is 352444356542.

It can be written as a sum of positive squares in 2 ways, for example, as 174371386084 + 71282058169 = 417578^2 + 266987^2 .

It is not a de Polignac number, because 245653444253 - 2¹⁴ = 245653427869 is a prime.

It is a super-2 number, since 2×245653444253² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245653444198 and 245653444207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245653444853) 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, 780200 + ... + 1048817.

It is an arithmetic number, because the mean of its divisors is an integer number (23822044941).

Almost surely, 2^245653444253 is an apocalyptic number.

It is an amenable number.

245653444253 is a deficient number, since it is larger than the sum of its proper divisors (40211095039).

245653444253 is a wasteful number, since it uses less digits than its factorization.

245653444253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831772 (or 1831765 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 47.

The spelling of 245653444253 in words is "two hundred forty-five billion, six hundred fifty-three million, four hundred forty-four thousand, two hundred fifty-three".