61228144297 has 2 divisors, whose sum is σ = 61228144298. Its totient is φ = 61228144296.

The previous prime is 61228144291. The next prime is 61228144321. The reversal of 61228144297 is 79244182216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31339266841 + 29888877456 = 177029^2 + 172884^2 .

It is a cyclic number.

It is not a de Polignac number, because 61228144297 - 2⁷ = 61228144169 is a prime.

It is not a weakly prime, because it can be changed into another prime (61228144291) 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, 30614072148 + 30614072149.

It is an arithmetic number, because the mean of its divisors is an integer number (30614072149).

Almost surely, 2^61228144297 is an apocalyptic number.

It is an amenable number.

61228144297 is a deficient number, since it is larger than the sum of its proper divisors (1).

61228144297 is an equidigital number, since it uses as much as digits as its factorization.

61228144297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The spelling of 61228144297 in words is "sixty-one billion, two hundred twenty-eight million, one hundred forty-four thousand, two hundred ninety-seven".