64163775188 has 48 divisors (see below), whose sum is σ = 122094362880. Its totient is φ = 29412413184.

The previous prime is 64163775161. The next prime is 64163775199. The reversal of 64163775188 is 88157736146.

64163775188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277745 + ... + 453287.

It is an arithmetic number, because the mean of its divisors is an integer number (2543632560).

Almost surely, 2^64163775188 is an apocalyptic number.

It is an amenable number.

64163775188 is a deficient number, since it is larger than the sum of its proper divisors (57930587692).

64163775188 is a wasteful number, since it uses less digits than its factorization.

64163775188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175736 (or 175734 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 56.

The spelling of 64163775188 in words is "sixty-four billion, one hundred sixty-three million, seven hundred seventy-five thousand, one hundred eighty-eight".