85103731439 has 2 divisors, whose sum is σ = 85103731440. Its totient is φ = 85103731438.

The previous prime is 85103731409. The next prime is 85103731483. The reversal of 85103731439 is 93413730158.

It is an a-pointer prime, because the next prime (85103731483) can be obtained adding 85103731439 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85103731439 - 2⁸ = 85103731183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85103731439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85103731409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42551865719 + 42551865720.

It is an arithmetic number, because the mean of its divisors is an integer number (42551865720).

Almost surely, 2^85103731439 is an apocalyptic number.

85103731439 is a deficient number, since it is larger than the sum of its proper divisors (1).

85103731439 is an equidigital number, since it uses as much as digits as its factorization.

85103731439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 85103731439 in words is "eighty-five billion, one hundred three million, seven hundred thirty-one thousand, four hundred thirty-nine".