4156431318029 has 2 divisors, whose sum is σ = 4156431318030. Its totient is φ = 4156431318028.

The previous prime is 4156431318023. The next prime is 4156431318097. The reversal of 4156431318029 is 9208131346514.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2299766184004 + 1856665134025 = 1516498^2 + 1362595^2 .

It is a cyclic number.

It is not a de Polignac number, because 4156431318029 - 2¹² = 4156431313933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4156431318023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078215659014 + 2078215659015.

It is an arithmetic number, because the mean of its divisors is an integer number (2078215659015).

Almost surely, 2^{4156431318029} is an apocalyptic number.

It is an amenable number.

4156431318029 is a deficient number, since it is larger than the sum of its proper divisors (1).

4156431318029 is an equidigital number, since it uses as much as digits as its factorization.

4156431318029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 4156431318029 in words is "four trillion, one hundred fifty-six billion, four hundred thirty-one million, three hundred eighteen thousand, twenty-nine".