156439371139 has 2 divisors, whose sum is σ = 156439371140. Its totient is φ = 156439371138.

The previous prime is 156439371041. The next prime is 156439371161. The reversal of 156439371139 is 931173934651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 156439371139 - 2³³ = 147849436547 is a prime.

It is not a weakly prime, because it can be changed into another prime (156439311139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78219685569 + 78219685570.

It is an arithmetic number, because the mean of its divisors is an integer number (78219685570).

Almost surely, 2^156439371139 is an apocalyptic number.

156439371139 is a deficient number, since it is larger than the sum of its proper divisors (1).

156439371139 is an equidigital number, since it uses as much as digits as its factorization.

156439371139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1837080, while the sum is 52.

The spelling of 156439371139 in words is "one hundred fifty-six billion, four hundred thirty-nine million, three hundred seventy-one thousand, one hundred thirty-nine".