64101773768 has 16 divisors (see below), whose sum is σ = 124335337500. Its totient is φ = 30945683776.

The previous prime is 64101773753. The next prime is 64101773779. The reversal of 64101773768 is 86737710146.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 59252322724 + 4849451044 = 243418^2 + 69638^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 138150143 + ... + 138150606.

Almost surely, 2^64101773768 is an apocalyptic number.

It is an amenable number.

64101773768 is a deficient number, since it is larger than the sum of its proper divisors (60233563732).

64101773768 is a wasteful number, since it uses less digits than its factorization.

64101773768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276300784 (or 276300780 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 64101773768 in words is "sixty-four billion, one hundred one million, seven hundred seventy-three thousand, seven hundred sixty-eight".