61111672243 has 2 divisors, whose sum is σ = 61111672244. Its totient is φ = 61111672242.

The previous prime is 61111672217. The next prime is 61111672291. The reversal of 61111672243 is 34227611116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61111672243 - 2¹⁷ = 61111541171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61111672199 and 61111672208.

It is not a weakly prime, because it can be changed into another prime (61111672343) 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, 30555836121 + 30555836122.

It is an arithmetic number, because the mean of its divisors is an integer number (30555836122).

Almost surely, 2^61111672243 is an apocalyptic number.

61111672243 is a deficient number, since it is larger than the sum of its proper divisors (1).

61111672243 is an equidigital number, since it uses as much as digits as its factorization.

61111672243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 34.

The spelling of 61111672243 in words is "sixty-one billion, one hundred eleven million, six hundred seventy-two thousand, two hundred forty-three".