61116555047 has 2 divisors, whose sum is σ = 61116555048. Its totient is φ = 61116555046.

The previous prime is 61116555011. The next prime is 61116555061. The reversal of 61116555047 is 74055561116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61116555047 - 2¹⁸ = 61116292903 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61116554995 and 61116555013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61116555077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30558277523 + 30558277524.

It is an arithmetic number, because the mean of its divisors is an integer number (30558277524).

Almost surely, 2^61116555047 is an apocalyptic number.

61116555047 is a deficient number, since it is larger than the sum of its proper divisors (1).

61116555047 is an equidigital number, since it uses as much as digits as its factorization.

61116555047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 61116555047 in words is "sixty-one billion, one hundred sixteen million, five hundred fifty-five thousand, forty-seven".