253344657361 has 4 divisors (see below), whose sum is σ = 253437087924. Its totient is φ = 253252226800.

The previous prime is 253344657347. The next prime is 253344657383. The reversal of 253344657361 is 163756443352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29918274961 + 223426382400 = 172969^2 + 472680^2 .

It is a cyclic number.

It is not a de Polignac number, because 253344657361 - 2⁵ = 253344657329 is a prime.

It is a super-4 number, since 4×253344657361⁴ (a number of 47 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253344657341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46211170 + ... + 46216651.

It is an arithmetic number, because the mean of its divisors is an integer number (63359271981).

Almost surely, 2^253344657361 is an apocalyptic number.

It is an amenable number.

253344657361 is a deficient number, since it is larger than the sum of its proper divisors (92430563).

253344657361 is an equidigital number, since it uses as much as digits as its factorization.

253344657361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92430562.

The product of its digits is 5443200, while the sum is 49.

The spelling of 253344657361 in words is "two hundred fifty-three billion, three hundred forty-four million, six hundred fifty-seven thousand, three hundred sixty-one".