66731502545088 has 56 divisors (see below), whose sum is σ = 176576954114880. Its totient is φ = 22241752884480.

The previous prime is 66731502545087. The next prime is 66731502545119. The reversal of 66731502545088 is 88054520513766.

It is not an unprimeable number, because it can be changed into a prime (66731502545087) 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 in 7 ways as a sum of consecutive naturals, for example, 14202118 + ... + 18307461.

Almost surely, 2^{66731502545088} is an apocalyptic number.

It is an amenable number.

66731502545088 is an abundant number, since it is smaller than the sum of its proper divisors (109845451569792).

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

66731502545088 is a wasteful number, since it uses less digits than its factorization.

66731502545088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32520285 (or 32520275 counting only the distinct ones).

The product of its (nonzero) digits is 48384000, while the sum is 60.

The spelling of 66731502545088 in words is "sixty-six trillion, seven hundred thirty-one billion, five hundred two million, five hundred forty-five thousand, eighty-eight".