252041661365 has 16 divisors (see below), whose sum is σ = 325836822528. Its totient is φ = 186053676096.

The previous prime is 252041661337. The next prime is 252041661367. The reversal of 252041661365 is 563166140252.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252041661365 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252041661367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546887 + ... + 896196.

It is an arithmetic number, because the mean of its divisors is an integer number (20364801408).

Almost surely, 2^252041661365 is an apocalyptic number.

It is an amenable number.

252041661365 is a deficient number, since it is larger than the sum of its proper divisors (73795161163).

252041661365 is a wasteful number, since it uses less digits than its factorization.

252041661365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445788.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 252041661365 in words is "two hundred fifty-two billion, forty-one million, six hundred sixty-one thousand, three hundred sixty-five".