85939375523 has 2 divisors, whose sum is σ = 85939375524. Its totient is φ = 85939375522.

The previous prime is 85939375519. The next prime is 85939375531. The reversal of 85939375523 is 32557393958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85939375523 - 2² = 85939375519 is a prime.

It is not a weakly prime, because it can be changed into another prime (85939375583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42969687761 + 42969687762.

It is an arithmetic number, because the mean of its divisors is an integer number (42969687762).

Almost surely, 2^85939375523 is an apocalyptic number.

85939375523 is a deficient number, since it is larger than the sum of its proper divisors (1).

85939375523 is an equidigital number, since it uses as much as digits as its factorization.

85939375523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618000, while the sum is 59.

The spelling of 85939375523 in words is "eighty-five billion, nine hundred thirty-nine million, three hundred seventy-five thousand, five hundred twenty-three".