101040255665 has 16 divisors (see below), whose sum is σ = 121433634000. Its totient is φ = 80708739072.

The previous prime is 101040255637. The next prime is 101040255683. The reversal of 101040255665 is 566552040101.

It can be written as a sum of positive squares in 8 ways, for example, as 6303724816 + 94736530849 = 79396^2 + 307793^2 .

It is a cyclic number.

It is not a de Polignac number, because 101040255665 - 2²⁶ = 100973146801 is a prime.

It is a Curzon 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, 15664361 + ... + 15670809.

It is an arithmetic number, because the mean of its divisors is an integer number (7589602125).

Almost surely, 2^101040255665 is an apocalyptic number.

It is an amenable number.

101040255665 is a deficient number, since it is larger than the sum of its proper divisors (20393378335).

101040255665 is an equidigital number, since it uses as much as digits as its factorization.

101040255665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10756.

The product of its (nonzero) digits is 36000, while the sum is 35.

Adding to 101040255665 its reverse (566552040101), we get a palindrome (667592295766).

The spelling of 101040255665 in words is "one hundred one billion, forty million, two hundred fifty-five thousand, six hundred sixty-five".