61105050169 has 2 divisors, whose sum is σ = 61105050170. Its totient is φ = 61105050168.

The previous prime is 61105050151. The next prime is 61105050179. The reversal of 61105050169 is 96105050116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60866810944 + 238239225 = 246712^2 + 15435^2 .

It is a cyclic number.

It is not a de Polignac number, because 61105050169 - 2³³ = 52515115577 is a prime.

It is a super-2 number, since 2×61105050169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61105050179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30552525084 + 30552525085.

It is an arithmetic number, because the mean of its divisors is an integer number (30552525085).

Almost surely, 2^61105050169 is an apocalyptic number.

It is an amenable number.

61105050169 is a deficient number, since it is larger than the sum of its proper divisors (1).

61105050169 is an equidigital number, since it uses as much as digits as its factorization.

61105050169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The spelling of 61105050169 in words is "sixty-one billion, one hundred five million, fifty thousand, one hundred sixty-nine".