64156818119 has 2 divisors, whose sum is σ = 64156818120. Its totient is φ = 64156818118.

The previous prime is 64156818113. The next prime is 64156818139. The reversal of 64156818119 is 91181865146.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64156818119 - 2¹² = 64156814023 is a prime.

It is a super-2 number, since 2×64156818119² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64156818113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32078409059 + 32078409060.

It is an arithmetic number, because the mean of its divisors is an integer number (32078409060).

Almost surely, 2^64156818119 is an apocalyptic number.

64156818119 is a deficient number, since it is larger than the sum of its proper divisors (1).

64156818119 is an equidigital number, since it uses as much as digits as its factorization.

64156818119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 50.

The spelling of 64156818119 in words is "sixty-four billion, one hundred fifty-six million, eight hundred eighteen thousand, one hundred nineteen".