64744171229 has 2 divisors, whose sum is σ = 64744171230. Its totient is φ = 64744171228.

The previous prime is 64744171189. The next prime is 64744171231. The reversal of 64744171229 is 92217144746.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54614755204 + 10129416025 = 233698^2 + 100645^2 .

It is a cyclic number.

It is not a de Polignac number, because 64744171229 - 2⁸ = 64744170973 is a prime.

Together with 64744171231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64744177229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32372085614 + 32372085615.

It is an arithmetic number, because the mean of its divisors is an integer number (32372085615).

Almost surely, 2^64744171229 is an apocalyptic number.

It is an amenable number.

64744171229 is a deficient number, since it is larger than the sum of its proper divisors (1).

64744171229 is an equidigital number, since it uses as much as digits as its factorization.

64744171229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The spelling of 64744171229 in words is "sixty-four billion, seven hundred forty-four million, one hundred seventy-one thousand, two hundred twenty-nine".