66188295144 has 48 divisors (see below), whose sum is σ = 179381294820. Its totient is φ = 22047832320.

The previous prime is 66188295143. The next prime is 66188295157. The reversal of 66188295144 is 44159288166.

66188295144 is a `hidden beast` number, since 6 + 618 + 8 + 2 + 9 + 5 + 14 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 62045828100 + 4142467044 = 249090^2 + 64362^2 .

It is not an unprimeable number, because it can be changed into a prime (66188295143) 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 in 11 ways as a sum of consecutive naturals, for example, 203727 + ... + 416990.

Almost surely, 2^66188295144 is an apocalyptic number.

It is an amenable number.

66188295144 is an abundant number, since it is smaller than the sum of its proper divisors (113192999676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66188295144 is a wasteful number, since it uses less digits than its factorization.

66188295144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622210 (or 622203 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 66188295144 in words is "sixty-six billion, one hundred eighty-eight million, two hundred ninety-five thousand, one hundred forty-four".