64868166733 has 2 divisors, whose sum is σ = 64868166734. Its totient is φ = 64868166732.

The previous prime is 64868166697. The next prime is 64868166751. The reversal of 64868166733 is 33766186846.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34507892169 + 30360274564 = 185763^2 + 174242^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64868166733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64868167733) 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, 32434083366 + 32434083367.

It is an arithmetic number, because the mean of its divisors is an integer number (32434083367).

Almost surely, 2^64868166733 is an apocalyptic number.

It is an amenable number.

64868166733 is a deficient number, since it is larger than the sum of its proper divisors (1).

64868166733 is an equidigital number, since it uses as much as digits as its factorization.

64868166733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 58.

The spelling of 64868166733 in words is "sixty-four billion, eight hundred sixty-eight million, one hundred sixty-six thousand, seven hundred thirty-three".