66774067771107 has 32 divisors (see below), whose sum is σ = 89572164897600. Its totient is φ = 44246794752000.

The previous prime is 66774067771067. The next prime is 66774067771121. The reversal of 66774067771107 is 70117776047766.

It is not a de Polignac number, because 66774067771107 - 2²⁴ = 66774050993891 is a prime.

It is a super-2 number, since 2×66774067771107² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66774067770107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 804649557 + ... + 804732537.

It is an arithmetic number, because the mean of its divisors is an integer number (2799130153050).

Almost surely, 2^{66774067771107} is an apocalyptic number.

66774067771107 is a deficient number, since it is larger than the sum of its proper divisors (22798097126493).

66774067771107 is a wasteful number, since it uses less digits than its factorization.

66774067771107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85335.

The product of its (nonzero) digits is 101648736, while the sum is 66.

The spelling of 66774067771107 in words is "sixty-six trillion, seven hundred seventy-four billion, sixty-seven million, seven hundred seventy-one thousand, one hundred seven".