265134450653523 has 80 divisors (see below), whose sum is σ = 438991902898560. Its totient is φ = 158118804518400.

The previous prime is 265134450653519. The next prime is 265134450653531. The reversal of 265134450653523 is 325356054431562.

265134450653523 is a `hidden beast` number, since 2 + 6 + 5 + 1 + 3 + 4 + 4 + 50 + 65 + 3 + 523 = 666.

It is not a de Polignac number, because 265134450653523 - 2² = 265134450653519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 265134450653523.

It is not an unprimeable number, because it can be changed into a prime (265134450653323) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 53068128 + ... + 57848898.

It is an arithmetic number, because the mean of its divisors is an integer number (5487398786232).

Almost surely, 2^{265134450653523} is an apocalyptic number.

265134450653523 is a deficient number, since it is larger than the sum of its proper divisors (173857452245037).

265134450653523 is a wasteful number, since it uses less digits than its factorization.

265134450653523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4781790 (or 4781781 counting only the distinct ones).

The product of its (nonzero) digits is 38880000, while the sum is 54.

The spelling of 265134450653523 in words is "two hundred sixty-five trillion, one hundred thirty-four billion, four hundred fifty million, six hundred fifty-three thousand, five hundred twenty-three".