85388523857 has 8 divisors (see below), whose sum is σ = 105093567936. Its totient is φ = 67560150672.

The previous prime is 85388523767. The next prime is 85388523859. The reversal of 85388523857 is 75832588358.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85388523857 - 2²² = 85384329553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85388523857.

It is not an unprimeable number, because it can be changed into a prime (85388523859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469167623 + ... + 469167804.

It is an arithmetic number, because the mean of its divisors is an integer number (13136695992).

Almost surely, 2^85388523857 is an apocalyptic number.

It is an amenable number.

85388523857 is a deficient number, since it is larger than the sum of its proper divisors (19705044079).

85388523857 is a wasteful number, since it uses less digits than its factorization.

85388523857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938335447.

The product of its digits is 64512000, while the sum is 62.

The spelling of 85388523857 in words is "eighty-five billion, three hundred eighty-eight million, five hundred twenty-three thousand, eight hundred fifty-seven".