166000631005403 has 2 divisors, whose sum is σ = 166000631005404. Its totient is φ = 166000631005402.

The previous prime is 166000631005379. The next prime is 166000631005453. The reversal of 166000631005403 is 304500136000661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166000631005403 - 2¹⁶ = 166000630939867 is a prime.

It is not a weakly prime, because it can be changed into another prime (166000631005453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83000315502701 + 83000315502702.

It is an arithmetic number, because the mean of its divisors is an integer number (83000315502702).

Almost surely, 2^{166000631005403} is an apocalyptic number.

166000631005403 is a deficient number, since it is larger than the sum of its proper divisors (1).

166000631005403 is an equidigital number, since it uses as much as digits as its factorization.

166000631005403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 166000631005403 in words is "one hundred sixty-six trillion, six hundred thirty-one million, five thousand, four hundred three".