85431543075 has 24 divisors (see below), whose sum is σ = 156940910000. Its totient is φ = 45563489280.

The previous prime is 85431543073. The next prime is 85431543077. The reversal of 85431543075 is 57034513458.

It is a happy number.

85431543075 is a `hidden beast` number, since 8 + 5 + 4 + 31 + 543 + 0 + 75 = 666.

It is an interprime number because it is at equal distance from previous prime (85431543073) and next prime (85431543077).

It is not a de Polignac number, because 85431543075 - 2¹ = 85431543073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 85431543075.

It is not an unprimeable number, because it can be changed into a prime (85431543073) 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 23 ways as a sum of consecutive naturals, for example, 63281950 + ... + 63283299.

Almost surely, 2^85431543075 is an apocalyptic number.

85431543075 is a deficient number, since it is larger than the sum of its proper divisors (71509366925).

85431543075 is a wasteful number, since it uses less digits than its factorization.

85431543075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126565268 (or 126565257 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 85431543075 in words is "eighty-five billion, four hundred thirty-one million, five hundred forty-three thousand, seventy-five".