64510041397 has 2 divisors, whose sum is σ = 64510041398. Its totient is φ = 64510041396.

The previous prime is 64510041353. The next prime is 64510041467. The reversal of 64510041397 is 79314001546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34653311716 + 29856729681 = 186154^2 + 172791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64510041397 is a prime.

It is a super-3 number, since 3×64510041397³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64510041997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32255020698 + 32255020699.

It is an arithmetic number, because the mean of its divisors is an integer number (32255020699).

Almost surely, 2^64510041397 is an apocalyptic number.

It is an amenable number.

64510041397 is a deficient number, since it is larger than the sum of its proper divisors (1).

64510041397 is an equidigital number, since it uses as much as digits as its factorization.

64510041397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 64510041397 in words is "sixty-four billion, five hundred ten million, forty-one thousand, three hundred ninety-seven".