5551610165117 has 2 divisors, whose sum is σ = 5551610165118. Its totient is φ = 5551610165116.

The previous prime is 5551610165111. The next prime is 5551610165197. The reversal of 5551610165117 is 7115610161555.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5342412785956 + 209197379161 = 2311366^2 + 457381^2 .

It is a cyclic number.

It is not a de Polignac number, because 5551610165117 - 2⁸ = 5551610164861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5551610165111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775805082558 + 2775805082559.

It is an arithmetic number, because the mean of its divisors is an integer number (2775805082559).

Almost surely, 2^{5551610165117} is an apocalyptic number.

It is an amenable number.

5551610165117 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551610165117 is an equidigital number, since it uses as much as digits as its factorization.

5551610165117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157500, while the sum is 44.

The spelling of 5551610165117 in words is "five trillion, five hundred fifty-one billion, six hundred ten million, one hundred sixty-five thousand, one hundred seventeen".