64858088311909 has 2 divisors, whose sum is σ = 64858088311910. Its totient is φ = 64858088311908.

The previous prime is 64858088311889. The next prime is 64858088311981. The reversal of 64858088311909 is 90911388085846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55045864104100 + 9812224207809 = 7419290^2 + 3132447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64858088311909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64858088611909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32429044155954 + 32429044155955.

It is an arithmetic number, because the mean of its divisors is an integer number (32429044155955).

Almost surely, 2^{64858088311909} is an apocalyptic number.

It is an amenable number.

64858088311909 is a deficient number, since it is larger than the sum of its proper divisors (1).

64858088311909 is an equidigital number, since it uses as much as digits as its factorization.

64858088311909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119439360, while the sum is 70.

The spelling of 64858088311909 in words is "sixty-four trillion, eight hundred fifty-eight billion, eighty-eight million, three hundred eleven thousand, nine hundred nine".