55161666116657 has 2 divisors, whose sum is σ = 55161666116658. Its totient is φ = 55161666116656.

The previous prime is 55161666116597. The next prime is 55161666116663. The reversal of 55161666116657 is 75661166616155.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46696120903936 + 8465545212721 = 6833456^2 + 2909561^2 .

It is a cyclic number.

It is not a de Polignac number, because 55161666116657 - 2²⁴ = 55161649339441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55161666116657.

It is not a weakly prime, because it can be changed into another prime (55161666116257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27580833058328 + 27580833058329.

It is an arithmetic number, because the mean of its divisors is an integer number (27580833058329).

Almost surely, 2^{55161666116657} is an apocalyptic number.

It is an amenable number.

55161666116657 is a deficient number, since it is larger than the sum of its proper divisors (1).

55161666116657 is an equidigital number, since it uses as much as digits as its factorization.

55161666116657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824000, while the sum is 62.

The spelling of 55161666116657 in words is "fifty-five trillion, one hundred sixty-one billion, six hundred sixty-six million, one hundred sixteen thousand, six hundred fifty-seven".