66645417735360 has 168 divisors, whose sum is σ = 229235482213920. Its totient is φ = 17771877715968.

The previous prime is 66645417735343. The next prime is 66645417735409. The reversal of 66645417735360 is 6353771454666.

It is a super-2 number, since 2×66645417735360² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431902701 + ... + 432056979.

It is an arithmetic number, because the mean of its divisors is an integer number (1364496917940).

Almost surely, 2^{66645417735360} is an apocalyptic number.

66645417735360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66645417735360 is an abundant number, since it is smaller than the sum of its proper divisors (162590064478560).

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

66645417735360 is a wasteful number, since it uses less digits than its factorization.

66645417735360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304295 (or 304282 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 63.

The spelling of 66645417735360 in words is "sixty-six trillion, six hundred forty-five billion, four hundred seventeen million, seven hundred thirty-five thousand, three hundred sixty".