64186616629 has 2 divisors, whose sum is σ = 64186616630. Its totient is φ = 64186616628.

The previous prime is 64186616591. The next prime is 64186616647. The reversal of 64186616629 is 92661668146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63953352100 + 233264529 = 252890^2 + 15273^2 .

It is a cyclic number.

It is not a de Polignac number, because 64186616629 - 2²³ = 64178228021 is a prime.

It is a super-3 number, since 3×64186616629³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64186616629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64186616699) 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, 32093308314 + 32093308315.

It is an arithmetic number, because the mean of its divisors is an integer number (32093308315).

Almost surely, 2^64186616629 is an apocalyptic number.

It is an amenable number.

64186616629 is a deficient number, since it is larger than the sum of its proper divisors (1).

64186616629 is an equidigital number, since it uses as much as digits as its factorization.

64186616629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 55.

The spelling of 64186616629 in words is "sixty-four billion, one hundred eighty-six million, six hundred sixteen thousand, six hundred twenty-nine".