166611156037 has 2 divisors, whose sum is σ = 166611156038. Its totient is φ = 166611156036.

The previous prime is 166611155993. The next prime is 166611156059. The reversal of 166611156037 is 730651116661.

166611156037 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149355969156 + 17255186881 = 386466^2 + 131359^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166611156037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166611155984 and 166611156002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166611156137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83305578018 + 83305578019.

It is an arithmetic number, because the mean of its divisors is an integer number (83305578019).

Almost surely, 2^166611156037 is an apocalyptic number.

It is an amenable number.

166611156037 is a deficient number, since it is larger than the sum of its proper divisors (1).

166611156037 is an equidigital number, since it uses as much as digits as its factorization.

166611156037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 166611156037 in words is "one hundred sixty-six billion, six hundred eleven million, one hundred fifty-six thousand, thirty-seven".