166176944741 has 2 divisors, whose sum is σ = 166176944742. Its totient is φ = 166176944740.

The previous prime is 166176944737. The next prime is 166176944761. The reversal of 166176944741 is 147449671661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159412540225 + 6764404516 = 399265^2 + 82246^2 .

It is an emirp because it is prime and its reverse (147449671661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166176944741 - 2² = 166176944737 is a prime.

It is a super-2 number, since 2×166176944741² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166176944711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83088472370 + 83088472371.

It is an arithmetic number, because the mean of its divisors is an integer number (83088472371).

Almost surely, 2^166176944741 is an apocalyptic number.

It is an amenable number.

166176944741 is a deficient number, since it is larger than the sum of its proper divisors (1).

166176944741 is an equidigital number, since it uses as much as digits as its factorization.

166176944741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 56.

The spelling of 166176944741 in words is "one hundred sixty-six billion, one hundred seventy-six million, nine hundred forty-four thousand, seven hundred forty-one".