64273037291 has 2 divisors, whose sum is σ = 64273037292. Its totient is φ = 64273037290.

The previous prime is 64273037281. The next prime is 64273037293. The reversal of 64273037291 is 19273037246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64273037291 - 2¹⁴ = 64273020907 is a prime.

It is a super-2 number, since 2×64273037291² (a number of 22 digits) contains 22 as substring.

Together with 64273037293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64273037293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32136518645 + 32136518646.

It is an arithmetic number, because the mean of its divisors is an integer number (32136518646).

Almost surely, 2^64273037291 is an apocalyptic number.

64273037291 is a deficient number, since it is larger than the sum of its proper divisors (1).

64273037291 is an equidigital number, since it uses as much as digits as its factorization.

64273037291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 44.

The spelling of 64273037291 in words is "sixty-four billion, two hundred seventy-three million, thirty-seven thousand, two hundred ninety-one".