64122320387 has 2 divisors, whose sum is σ = 64122320388. Its totient is φ = 64122320386.

The previous prime is 64122320267. The next prime is 64122320467. The reversal of 64122320387 is 78302322146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64122320387 - 2²⁰ = 64121271811 is a prime.

It is a super-2 number, since 2×64122320387² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64122320387.

It is not a weakly prime, because it can be changed into another prime (64122329387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32061160193 + 32061160194.

It is an arithmetic number, because the mean of its divisors is an integer number (32061160194).

Almost surely, 2^64122320387 is an apocalyptic number.

64122320387 is a deficient number, since it is larger than the sum of its proper divisors (1).

64122320387 is an equidigital number, since it uses as much as digits as its factorization.

64122320387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 64122320387 in words is "sixty-four billion, one hundred twenty-two million, three hundred twenty thousand, three hundred eighty-seven".