265140115350421 has 8 divisors (see below), whose sum is σ = 270450789595704. Its totient is φ = 259840849644480.

The previous prime is 265140115350403. The next prime is 265140115350433. The reversal of 265140115350421 is 124053511041562.

It can be written as a sum of positive squares in 4 ways, for example, as 145808305662321 + 119331809688100 = 12075111^2 + 10923910^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 265140115350421 - 2¹⁷ = 265140115219349 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 (265140115357421) 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 7 ways as a sum of consecutive naturals, for example, 2852087890 + ... + 2852180851.

It is an arithmetic number, because the mean of its divisors is an integer number (33806348699463).

Almost surely, 2^{265140115350421} is an apocalyptic number.

It is an amenable number.

265140115350421 is a deficient number, since it is larger than the sum of its proper divisors (5310674245283).

265140115350421 is an equidigital number, since it uses as much as digits as its factorization.

265140115350421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704269671.

The product of its (nonzero) digits is 144000, while the sum is 40.

Adding to 265140115350421 its reverse (124053511041562), we get a palindrome (389193626391983).

The spelling of 265140115350421 in words is "two hundred sixty-five trillion, one hundred forty billion, one hundred fifteen million, three hundred fifty thousand, four hundred twenty-one".