166703348137 has 2 divisors, whose sum is σ = 166703348138. Its totient is φ = 166703348136.

The previous prime is 166703348131. The next prime is 166703348171. The reversal of 166703348137 is 731843307661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155791247616 + 10912100521 = 394704^2 + 104461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166703348137 is a prime.

It is not a weakly prime, because it can be changed into another prime (166703348131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83351674068 + 83351674069.

It is an arithmetic number, because the mean of its divisors is an integer number (83351674069).

Almost surely, 2^166703348137 is an apocalyptic number.

It is an amenable number.

166703348137 is a deficient number, since it is larger than the sum of its proper divisors (1).

166703348137 is an equidigital number, since it uses as much as digits as its factorization.

166703348137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 166703348137 in words is "one hundred sixty-six billion, seven hundred three million, three hundred forty-eight thousand, one hundred thirty-seven".