53551666250653 has 32 divisors (see below), whose sum is σ = 55893043720800. Its totient is φ = 51245322240000.

The previous prime is 53551666250609. The next prime is 53551666250659. The reversal of 53551666250653 is 35605266615535.

It can be written as a sum of positive squares in 16 ways, for example, as 20062274102649 + 33489392148004 = 4479093^2 + 5787002^2 .

It is a cyclic number.

It is not a de Polignac number, because 53551666250653 - 2⁹ = 53551666250141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53551666250659) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3285168603 + ... + 3285184903.

It is an arithmetic number, because the mean of its divisors is an integer number (1746657616275).

Almost surely, 2^{53551666250653} is an apocalyptic number.

It is an amenable number.

53551666250653 is a deficient number, since it is larger than the sum of its proper divisors (2341377470147).

53551666250653 is a wasteful number, since it uses less digits than its factorization.

53551666250653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18513.

The product of its (nonzero) digits is 72900000, while the sum is 58.

The spelling of 53551666250653 in words is "fifty-three trillion, five hundred fifty-one billion, six hundred sixty-six million, two hundred fifty thousand, six hundred fifty-three".