55402660169 has 2 divisors, whose sum is σ = 55402660170. Its totient is φ = 55402660168.

The previous prime is 55402660133. The next prime is 55402660189. The reversal of 55402660169 is 96106620455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53181894544 + 2220765625 = 230612^2 + 47125^2 .

It is a cyclic number.

It is not a de Polignac number, because 55402660169 - 2⁸ = 55402659913 is a prime.

It is a super-2 number, since 2×55402660169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55402660189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27701330084 + 27701330085.

It is an arithmetic number, because the mean of its divisors is an integer number (27701330085).

Almost surely, 2^55402660169 is an apocalyptic number.

It is an amenable number.

55402660169 is a deficient number, since it is larger than the sum of its proper divisors (1).

55402660169 is an equidigital number, since it uses as much as digits as its factorization.

55402660169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 55402660169 in words is "fifty-five billion, four hundred two million, six hundred sixty thousand, one hundred sixty-nine".