253561336165 has 16 divisors (see below), whose sum is σ = 305232542208. Its totient is φ = 202210289856.

The previous prime is 253561336163. The next prime is 253561336169. The reversal of 253561336165 is 561633165352.

It is a cyclic number.

It is not a de Polignac number, because 253561336165 - 2¹ = 253561336163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253561336163) 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, 4085254 + ... + 4146856.

It is an arithmetic number, because the mean of its divisors is an integer number (19077033888).

Almost surely, 2^253561336165 is an apocalyptic number.

It is an amenable number.

253561336165 is a deficient number, since it is larger than the sum of its proper divisors (51671206043).

253561336165 is a wasteful number, since it uses less digits than its factorization.

253561336165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64188.

The product of its digits is 1458000, while the sum is 46.

The spelling of 253561336165 in words is "two hundred fifty-three billion, five hundred sixty-one million, three hundred thirty-six thousand, one hundred sixty-five".