166416034305431 has 2 divisors, whose sum is σ = 166416034305432. Its totient is φ = 166416034305430.

The previous prime is 166416034305427. The next prime is 166416034305439. The reversal of 166416034305431 is 134503430614661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166416034305431 - 2² = 166416034305427 is a prime.

It is a super-2 number, since 2×166416034305431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166416034305439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83208017152715 + 83208017152716.

It is an arithmetic number, because the mean of its divisors is an integer number (83208017152716).

Almost surely, 2^{166416034305431} is an apocalyptic number.

166416034305431 is a deficient number, since it is larger than the sum of its proper divisors (1).

166416034305431 is an equidigital number, since it uses as much as digits as its factorization.

166416034305431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 166416034305431 in words is "one hundred sixty-six trillion, four hundred sixteen billion, thirty-four million, three hundred five thousand, four hundred thirty-one".