53665126365261 has 16 divisors (see below), whose sum is σ = 79056554442624. Its totient is φ = 32208225882624.

The previous prime is 53665126365251. The next prime is 53665126365299. The reversal of 53665126365261 is 16256362156635.

53665126365261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 53665126365261 - 2⁹ = 53665126364749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53665126365251) 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 15 ways as a sum of consecutive naturals, for example, 22875159256 + ... + 22875161601.

It is an arithmetic number, because the mean of its divisors is an integer number (4941034652664).

Almost surely, 2^{53665126365261} is an apocalyptic number.

53665126365261 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

53665126365261 is a deficient number, since it is larger than the sum of its proper divisors (25391428077363).

53665126365261 is a wasteful number, since it uses less digits than its factorization.

53665126365261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45750320900.

The product of its digits is 34992000, while the sum is 57.

The spelling of 53665126365261 in words is "fifty-three trillion, six hundred sixty-five billion, one hundred twenty-six million, three hundred sixty-five thousand, two hundred sixty-one".