61222233889 has 2 divisors, whose sum is σ = 61222233890. Its totient is φ = 61222233888.

The previous prime is 61222233859. The next prime is 61222233923. The reversal of 61222233889 is 98833222216.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56023102864 + 5199131025 = 236692^2 + 72105^2 .

It is a cyclic number.

It is not a de Polignac number, because 61222233889 - 2⁵ = 61222233857 is a prime.

It is not a weakly prime, because it can be changed into another prime (61222233829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30611116944 + 30611116945.

It is an arithmetic number, because the mean of its divisors is an integer number (30611116945).

Almost surely, 2^61222233889 is an apocalyptic number.

It is an amenable number.

61222233889 is a deficient number, since it is larger than the sum of its proper divisors (1).

61222233889 is an equidigital number, since it uses as much as digits as its factorization.

61222233889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The spelling of 61222233889 in words is "sixty-one billion, two hundred twenty-two million, two hundred thirty-three thousand, eight hundred eighty-nine".