64331266332331 has 4 divisors (see below), whose sum is σ = 65827342293592. Its totient is φ = 62835190371072.

The previous prime is 64331266332299. The next prime is 64331266332367. The reversal of 64331266332331 is 13323366213346.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64331266332331 - 2⁵ = 64331266332299 is a prime.

It is a super-2 number, since 2×64331266332331² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64331266332731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748037980566 + ... + 748037980651.

It is an arithmetic number, because the mean of its divisors is an integer number (16456835573398).

Almost surely, 2^{64331266332331} is an apocalyptic number.

64331266332331 is a deficient number, since it is larger than the sum of its proper divisors (1496075961261).

64331266332331 is a wasteful number, since it uses less digits than its factorization.

64331266332331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496075961260.

The product of its digits is 2519424, while the sum is 46.

The spelling of 64331266332331 in words is "sixty-four trillion, three hundred thirty-one billion, two hundred sixty-six million, three hundred thirty-two thousand, three hundred thirty-one".