85438544583459 has 32 divisors (see below), whose sum is σ = 117803723653440. Its totient is φ = 55037798479872.

The previous prime is 85438544583449. The next prime is 85438544583463. The reversal of 85438544583459 is 95438544583458.

It is not a de Polignac number, because 85438544583459 - 2²⁸ = 85438276148003 is a prime.

It is a super-2 number, since 2×85438544583459² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85438544583409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32056447 + ... + 34619255.

It is an arithmetic number, because the mean of its divisors is an integer number (3681366364170).

Almost surely, 2^{85438544583459} is an apocalyptic number.

85438544583459 is a deficient number, since it is larger than the sum of its proper divisors (32365179069981).

85438544583459 is a wasteful number, since it uses less digits than its factorization.

85438544583459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564919.

The product of its digits is 6635520000, while the sum is 75.

Subtracting 85438544583459 from its reverse (95438544583458), we obtain a palindrome (9999999999999).

The spelling of 85438544583459 in words is "eighty-five trillion, four hundred thirty-eight billion, five hundred forty-four million, five hundred eighty-three thousand, four hundred fifty-nine".