66231195928560 has 240 divisors, whose sum is σ = 253626521488704. Its totient is φ = 15344059834368.

The previous prime is 66231195928531. The next prime is 66231195928561. The reversal of 66231195928560 is 6582959113266.

66231195928560 is a `hidden beast` number, since 6 + 6 + 2 + 3 + 1 + 19 + 59 + 2 + 8 + 560 = 666.

66231195928560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66231195928561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 207958012 + ... + 208276251.

Almost surely, 2^{66231195928560} is an apocalyptic number.

66231195928560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66231195928560 is an abundant number, since it is smaller than the sum of its proper divisors (187395325560144).

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

66231195928560 is a wasteful number, since it uses less digits than its factorization.

66231195928560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416234312 (or 416234303 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 63.

The spelling of 66231195928560 in words is "sixty-six trillion, two hundred thirty-one billion, one hundred ninety-five million, nine hundred twenty-eight thousand, five hundred sixty".