61167837161 has 2 divisors, whose sum is σ = 61167837162. Its totient is φ = 61167837160.

The previous prime is 61167837113. The next prime is 61167837179. The reversal of 61167837161 is 16173876116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58469658025 + 2698179136 = 241805^2 + 51944^2 .

It is a cyclic number.

It is not a de Polignac number, because 61167837161 - 2⁶ = 61167837097 is a prime.

It is a super-2 number, since 2×61167837161² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61167837361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30583918580 + 30583918581.

It is an arithmetic number, because the mean of its divisors is an integer number (30583918581).

Almost surely, 2^61167837161 is an apocalyptic number.

It is an amenable number.

61167837161 is a deficient number, since it is larger than the sum of its proper divisors (1).

61167837161 is an equidigital number, since it uses as much as digits as its factorization.

61167837161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 47.

The spelling of 61167837161 in words is "sixty-one billion, one hundred sixty-seven million, eight hundred thirty-seven thousand, one hundred sixty-one".