61111111027 has 2 divisors, whose sum is σ = 61111111028. Its totient is φ = 61111111026.

The previous prime is 61111111007. The next prime is 61111111031. The reversal of 61111111027 is 72011111116.

61111111027 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61111111027 - 2⁷ = 61111110899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61111110989 and 61111111007.

It is not a weakly prime, because it can be changed into another prime (61111111007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30555555513 + 30555555514.

It is an arithmetic number, because the mean of its divisors is an integer number (30555555514).

Almost surely, 2^61111111027 is an apocalyptic number.

61111111027 is a deficient number, since it is larger than the sum of its proper divisors (1).

61111111027 is an equidigital number, since it uses as much as digits as its factorization.

61111111027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 22.

The spelling of 61111111027 in words is "sixty-one billion, one hundred eleven million, one hundred eleven thousand, twenty-seven".