64138588746239 has 32 divisors (see below), whose sum is σ = 76289531318784. Its totient is φ = 52780908510720.

The previous prime is 64138588746137. The next prime is 64138588746251. The reversal of 64138588746239 is 93264788583146.

It is a cyclic number.

It is not a de Polignac number, because 64138588746239 - 2¹⁶ = 64138588680703 is a prime.

It is a super-2 number, since 2×64138588746239² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64138588746259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5826032 + ... + 12736554.

It is an arithmetic number, because the mean of its divisors is an integer number (2384047853712).

Almost surely, 2^{64138588746239} is an apocalyptic number.

64138588746239 is a deficient number, since it is larger than the sum of its proper divisors (12150942572545).

64138588746239 is a wasteful number, since it uses less digits than its factorization.

64138588746239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911087.

The product of its digits is 1672151040, while the sum is 74.

The spelling of 64138588746239 in words is "sixty-four trillion, one hundred thirty-eight billion, five hundred eighty-eight million, seven hundred forty-six thousand, two hundred thirty-nine".