64881023143331 has 2 divisors, whose sum is σ = 64881023143332. Its totient is φ = 64881023143330.

The previous prime is 64881023143327. The next prime is 64881023143553. The reversal of 64881023143331 is 13334132018846.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64881023143331 - 2² = 64881023143327 is a prime.

It is a super-2 number, since 2×64881023143331² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64881023143301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32440511571665 + 32440511571666.

It is an arithmetic number, because the mean of its divisors is an integer number (32440511571666).

Almost surely, 2^{64881023143331} is an apocalyptic number.

64881023143331 is a deficient number, since it is larger than the sum of its proper divisors (1).

64881023143331 is an equidigital number, since it uses as much as digits as its factorization.

64881023143331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 64881023143331 in words is "sixty-four trillion, eight hundred eighty-one billion, twenty-three million, one hundred forty-three thousand, three hundred thirty-one".