61364221063 has 2 divisors, whose sum is σ = 61364221064. Its totient is φ = 61364221062.

The previous prime is 61364220947. The next prime is 61364221081. The reversal of 61364221063 is 36012246316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61364221063 - 2¹⁷ = 61364089991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61364225063) 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, 30682110531 + 30682110532.

It is an arithmetic number, because the mean of its divisors is an integer number (30682110532).

Almost surely, 2^61364221063 is an apocalyptic number.

61364221063 is a deficient number, since it is larger than the sum of its proper divisors (1).

61364221063 is an equidigital number, since it uses as much as digits as its factorization.

61364221063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 61364221063 its reverse (36012246316), we get a palindrome (97376467379).

The spelling of 61364221063 in words is "sixty-one billion, three hundred sixty-four million, two hundred twenty-one thousand, sixty-three".