85123755506 has 16 divisors (see below), whose sum is σ = 132170621400. Its totient is φ = 41068704768.

The previous prime is 85123755491. The next prime is 85123755671. The reversal of 85123755506 is 60555732158.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 56719709281 + 28404046225 = 238159^2 + 168535^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361391 + ... + 548498.

Almost surely, 2^85123755506 is an apocalyptic number.

85123755506 is a deficient number, since it is larger than the sum of its proper divisors (47046865894).

85123755506 is a wasteful number, since it uses less digits than its factorization.

85123755506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911533.

The product of its (nonzero) digits is 1260000, while the sum is 47.

The spelling of 85123755506 in words is "eighty-five billion, one hundred twenty-three million, seven hundred fifty-five thousand, five hundred six".