61167677009 has 2 divisors, whose sum is σ = 61167677010. Its totient is φ = 61167677008.

The previous prime is 61167676987. The next prime is 61167677029. The reversal of 61167677009 is 90077676116.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57907609600 + 3260067409 = 240640^2 + 57097^2 .

It is a cyclic number.

It is not a de Polignac number, because 61167677009 - 2³² = 56872709713 is a prime.

It is not a weakly prime, because it can be changed into another prime (61167677029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30583838504 + 30583838505.

It is an arithmetic number, because the mean of its divisors is an integer number (30583838505).

Almost surely, 2^61167677009 is an apocalyptic number.

It is an amenable number.

61167677009 is a deficient number, since it is larger than the sum of its proper divisors (1).

61167677009 is an equidigital number, since it uses as much as digits as its factorization.

61167677009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 50.

The spelling of 61167677009 in words is "sixty-one billion, one hundred sixty-seven million, six hundred seventy-seven thousand, nine".