166182393053 has 2 divisors, whose sum is σ = 166182393054. Its totient is φ = 166182393052.

The previous prime is 166182393031. The next prime is 166182393077. The reversal of 166182393053 is 350393281661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125516444089 + 40665948964 = 354283^2 + 201658^2 .

It is a cyclic number.

It is not a de Polignac number, because 166182393053 - 2¹⁸ = 166182130909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166182392989 and 166182393007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166182393023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83091196526 + 83091196527.

It is an arithmetic number, because the mean of its divisors is an integer number (83091196527).

Almost surely, 2^166182393053 is an apocalyptic number.

It is an amenable number.

166182393053 is a deficient number, since it is larger than the sum of its proper divisors (1).

166182393053 is an equidigital number, since it uses as much as digits as its factorization.

166182393053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 166182393053 in words is "one hundred sixty-six billion, one hundred eighty-two million, three hundred ninety-three thousand, fifty-three".