15505566651053 has 2 divisors, whose sum is σ = 15505566651054. Its totient is φ = 15505566651052.

The previous prime is 15505566651017. The next prime is 15505566651089. The reversal of 15505566651053 is 35015666550551.

It is a balanced prime because it is at equal distance from previous prime (15505566651017) and next prime (15505566651089).

It can be written as a sum of positive squares in only one way, i.e., 12364210973284 + 3141355677769 = 3516278^2 + 1772387^2 .

It is a cyclic number.

It is not a de Polignac number, because 15505566651053 - 2⁶ = 15505566650989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15505566650986 and 15505566651004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15505566651013) 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 as a sum of consecutive naturals, namely, 7752783325526 + 7752783325527.

It is an arithmetic number, because the mean of its divisors is an integer number (7752783325527).

Almost surely, 2^{15505566651053} is an apocalyptic number.

It is an amenable number.

15505566651053 is a deficient number, since it is larger than the sum of its proper divisors (1).

15505566651053 is an equidigital number, since it uses as much as digits as its factorization.

15505566651053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10125000, while the sum is 53.

The spelling of 15505566651053 in words is "fifteen trillion, five hundred five billion, five hundred sixty-six million, six hundred fifty-one thousand, fifty-three".