85542734105 has 4 divisors (see below), whose sum is σ = 102651280932. Its totient is φ = 68434187280.

The previous prime is 85542734089. The next prime is 85542734113. The reversal of 85542734105 is 50143724558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37524338944 + 48018395161 = 193712^2 + 219131^2 .

It is not a de Polignac number, because 85542734105 - 2⁴ = 85542734089 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8554273406 + ... + 8554273415.

It is an arithmetic number, because the mean of its divisors is an integer number (25662820233).

Almost surely, 2^85542734105 is an apocalyptic number.

It is an amenable number.

85542734105 is a deficient number, since it is larger than the sum of its proper divisors (17108546827).

85542734105 is a wasteful number, since it uses less digits than its factorization.

85542734105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17108546826.

The product of its (nonzero) digits is 672000, while the sum is 44.

The spelling of 85542734105 in words is "eighty-five billion, five hundred forty-two million, seven hundred thirty-four thousand, one hundred five".