166653379199 has 2 divisors, whose sum is σ = 166653379200. Its totient is φ = 166653379198.

The previous prime is 166653379169. The next prime is 166653379267. The reversal of 166653379199 is 991973356661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166653379199 - 2¹⁶ = 166653313663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166653379129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83326689599 + 83326689600.

It is an arithmetic number, because the mean of its divisors is an integer number (83326689600).

Almost surely, 2^166653379199 is an apocalyptic number.

166653379199 is a deficient number, since it is larger than the sum of its proper divisors (1).

166653379199 is an equidigital number, since it uses as much as digits as its factorization.

166653379199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49601160, while the sum is 65.

The spelling of 166653379199 in words is "one hundred sixty-six billion, six hundred fifty-three million, three hundred seventy-nine thousand, one hundred ninety-nine".