64037872069 has 2 divisors, whose sum is σ = 64037872070. Its totient is φ = 64037872068.

The previous prime is 64037872049. The next prime is 64037872097. The reversal of 64037872069 is 96027873046.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58981951044 + 5055921025 = 242862^2 + 71105^2 .

It is a cyclic number.

It is not a de Polignac number, because 64037872069 - 2³⁵ = 29678133701 is a prime.

It is a super-2 number, since 2×64037872069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64037872049) 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, 32018936034 + 32018936035.

It is an arithmetic number, because the mean of its divisors is an integer number (32018936035).

Almost surely, 2^64037872069 is an apocalyptic number.

It is an amenable number.

64037872069 is a deficient number, since it is larger than the sum of its proper divisors (1).

64037872069 is an equidigital number, since it uses as much as digits as its factorization.

64037872069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 64037872069 in words is "sixty-four billion, thirty-seven million, eight hundred seventy-two thousand, sixty-nine".