265134631121001 has 6 divisors (see below), whose sum is σ = 382972244952570. Its totient is φ = 176756420747328.

The previous prime is 265134631120981. The next prime is 265134631121099. The reversal of 265134631121001 is 100121136431562.

265134631121001 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 3 + 4 + 631 + 1 + 2 + 10 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 169193781517401 + 95940849603600 = 13007451^2 + 9794940^2 .

It is not a de Polignac number, because 265134631121001 - 2¹¹ = 265134631118953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (265134631121401) 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 5 ways as a sum of consecutive naturals, for example, 14729701728936 + ... + 14729701728953.

It is an arithmetic number, because the mean of its divisors is an integer number (63828707492095).

Almost surely, 2^{265134631121001} is an apocalyptic number.

It is an amenable number.

265134631121001 is a deficient number, since it is larger than the sum of its proper divisors (117837613831569).

265134631121001 is a wasteful number, since it uses less digits than its factorization.

265134631121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29459403457895 (or 29459403457892 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

Adding to 265134631121001 its reverse (100121136431562), we get a palindrome (365255767552563).

The spelling of 265134631121001 in words is "two hundred sixty-five trillion, one hundred thirty-four billion, six hundred thirty-one million, one hundred twenty-one thousand, one".