64642244422031 has 2 divisors, whose sum is σ = 64642244422032. Its totient is φ = 64642244422030.

The previous prime is 64642244422003. The next prime is 64642244422037. The reversal of 64642244422031 is 13022444224646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64642244422031 - 2¹⁴ = 64642244405647 is a prime.

It is a super-2 number, since 2×64642244422031² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64642244422037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32321122211015 + 32321122211016.

It is an arithmetic number, because the mean of its divisors is an integer number (32321122211016).

Almost surely, 2^{64642244422031} is an apocalyptic number.

64642244422031 is a deficient number, since it is larger than the sum of its proper divisors (1).

64642244422031 is an equidigital number, since it uses as much as digits as its factorization.

64642244422031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1769472, while the sum is 44.

Adding to 64642244422031 its reverse (13022444224646), we get a palindrome (77664688646677).

The spelling of 64642244422031 in words is "sixty-four trillion, six hundred forty-two billion, two hundred forty-four million, four hundred twenty-two thousand, thirty-one".