64156818116 has 6 divisors (see below), whose sum is σ = 112274431710. Its totient is φ = 32078409056.

The previous prime is 64156818113. The next prime is 64156818119. The reversal of 64156818116 is 61181865146.

It is an interprime number because it is at equal distance from previous prime (64156818113) and next prime (64156818119).

It can be written as a sum of positive squares in only one way, i.e., 63480818116 + 676000000 = 251954^2 + 26000^2 .

It is not an unprimeable number, because it can be changed into a prime (64156818113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8019602261 + ... + 8019602268.

It is an arithmetic number, because the mean of its divisors is an integer number (18712405285).

Almost surely, 2^64156818116 is an apocalyptic number.

It is an amenable number.

64156818116 is a deficient number, since it is larger than the sum of its proper divisors (48117613594).

64156818116 is a wasteful number, since it uses less digits than its factorization.

64156818116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16039204533 (or 16039204531 counting only the distinct ones).

The product of its digits is 276480, while the sum is 47.

The spelling of 64156818116 in words is "sixty-four billion, one hundred fifty-six million, eight hundred eighteen thousand, one hundred sixteen".