66033557713275 has 24 divisors (see below), whose sum is σ = 109179666530304. Its totient is φ = 35216547626400.

The previous prime is 66033557713271. The next prime is 66033557713289. The reversal of 66033557713275 is 57231775533066.

It is a happy number.

It is not a de Polignac number, because 66033557713275 - 2² = 66033557713271 is a prime.

It is a super-2 number, since 2×66033557713275² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66033557713271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14901379 + ... + 18818028.

It is an arithmetic number, because the mean of its divisors is an integer number (4549152772096).

Almost surely, 2^{66033557713275} is an apocalyptic number.

66033557713275 is a deficient number, since it is larger than the sum of its proper divisors (43146108817029).

66033557713275 is a wasteful number, since it uses less digits than its factorization.

66033557713275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33745531 (or 33745526 counting only the distinct ones).

The product of its (nonzero) digits is 83349000, while the sum is 60.

The spelling of 66033557713275 in words is "sixty-six trillion, thirty-three billion, five hundred fifty-seven million, seven hundred thirteen thousand, two hundred seventy-five".