74706166091 has 2 divisors, whose sum is σ = 74706166092. Its totient is φ = 74706166090.

The previous prime is 74706166033. The next prime is 74706166109. The reversal of 74706166091 is 19066160747.

Together with next prime (74706166109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74706166091 - 2⁶ = 74706166027 is a prime.

It is a super-2 number, since 2×74706166091² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74706166391) 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 as a sum of consecutive naturals, namely, 37353083045 + 37353083046.

It is an arithmetic number, because the mean of its divisors is an integer number (37353083046).

Almost surely, 2^74706166091 is an apocalyptic number.

74706166091 is a deficient number, since it is larger than the sum of its proper divisors (1).

74706166091 is an equidigital number, since it uses as much as digits as its factorization.

74706166091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 74706166091 in words is "seventy-four billion, seven hundred six million, one hundred sixty-six thousand, ninety-one".