265135136662540 has 48 divisors (see below), whose sum is σ = 560404121760000. Its totient is φ = 105365911265280.

The previous prime is 265135136662531. The next prime is 265135136662559. The reversal of 265135136662540 is 45266631531562.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42192540 + ... + 48067459.

It is an arithmetic number, because the mean of its divisors is an integer number (11675085870000).

Almost surely, 2^{265135136662540} is an apocalyptic number.

265135136662540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

265135136662540 is an abundant number, since it is smaller than the sum of its proper divisors (295268985097460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

265135136662540 is a wasteful number, since it uses less digits than its factorization.

265135136662540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90260962 (or 90260960 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 55.

The spelling of 265135136662540 in words is "two hundred sixty-five trillion, one hundred thirty-five billion, one hundred thirty-six million, six hundred sixty-two thousand, five hundred forty".