53551666280713 has 2 divisors, whose sum is σ = 53551666280714. Its totient is φ = 53551666280712.

The previous prime is 53551666280669. The next prime is 53551666280737. The reversal of 53551666280713 is 31708266615535.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50663461201929 + 2888205078784 = 7117827^2 + 1699472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53551666280713 is a prime.

It is a super-2 number, since 2×53551666280713² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53551666280113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26775833140356 + 26775833140357.

It is an arithmetic number, because the mean of its divisors is an integer number (26775833140357).

Almost surely, 2^{53551666280713} is an apocalyptic number.

It is an amenable number.

53551666280713 is a deficient number, since it is larger than the sum of its proper divisors (1).

53551666280713 is an equidigital number, since it uses as much as digits as its factorization.

53551666280713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216000, while the sum is 58.

The spelling of 53551666280713 in words is "fifty-three trillion, five hundred fifty-one billion, six hundred sixty-six million, two hundred eighty thousand, seven hundred thirteen".