64223916906239 has 4 divisors (see below), whose sum is σ = 64223989090056. Its totient is φ = 64223844722424.

The previous prime is 64223916906229. The next prime is 64223916906251. The reversal of 64223916906239 is 93260961932246.

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 64223916906239 - 2⁴ = 64223916906223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64223916906229) 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, 34740449 + ... + 36542394.

It is an arithmetic number, because the mean of its divisors is an integer number (16055997272514).

Almost surely, 2^{64223916906239} is an apocalyptic number.

64223916906239 is a deficient number, since it is larger than the sum of its proper divisors (72183817).

64223916906239 is an equidigital number, since it uses as much as digits as its factorization.

64223916906239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72183816.

The product of its (nonzero) digits is 45349632, while the sum is 62.

The spelling of 64223916906239 in words is "sixty-four trillion, two hundred twenty-three billion, nine hundred sixteen million, nine hundred six thousand, two hundred thirty-nine".