265512056521071 has 64 divisors (see below), whose sum is σ = 370322668800000. Its totient is φ = 169001998298112.

The previous prime is 265512056521009. The next prime is 265512056521081. The reversal of 265512056521071 is 170125650215562.

It is a happy number.

It is not a de Polignac number, because 265512056521071 - 2¹⁴ = 265512056504687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265512056521071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265512056521081) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4238734570 + ... + 4238797208.

It is an arithmetic number, because the mean of its divisors is an integer number (5786291700000).

Almost surely, 2^{265512056521071} is an apocalyptic number.

265512056521071 is a deficient number, since it is larger than the sum of its proper divisors (104810612278929).

265512056521071 is a wasteful number, since it uses less digits than its factorization.

265512056521071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64176.

The product of its (nonzero) digits is 1260000, while the sum is 48.

The spelling of 265512056521071 in words is "two hundred sixty-five trillion, five hundred twelve billion, fifty-six million, five hundred twenty-one thousand, seventy-one".