53285660861 has 2 divisors, whose sum is σ = 53285660862. Its totient is φ = 53285660860.

The previous prime is 53285660843. The next prime is 53285660921. The reversal of 53285660861 is 16806658235.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53282488900 + 3171961 = 230830^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 53285660861 - 2³⁰ = 52211919037 is a prime.

It is a super-2 number, since 2×53285660861² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53285660261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26642830430 + 26642830431.

It is an arithmetic number, because the mean of its divisors is an integer number (26642830431).

Almost surely, 2^53285660861 is an apocalyptic number.

It is an amenable number.

53285660861 is a deficient number, since it is larger than the sum of its proper divisors (1).

53285660861 is an equidigital number, since it uses as much as digits as its factorization.

53285660861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2073600, while the sum is 50.

The spelling of 53285660861 in words is "fifty-three billion, two hundred eighty-five million, six hundred sixty thousand, eight hundred sixty-one".