85178209034 has 4 divisors (see below), whose sum is σ = 127767313554. Its totient is φ = 42589104516.

The previous prime is 85178209001. The next prime is 85178209037. The reversal of 85178209034 is 43090287158.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 83262833809 + 1915375225 = 288553^2 + 43765^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85178209034.

It is not an unprimeable number, because it can be changed into a prime (85178209037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21294552257 + ... + 21294552260.

Almost surely, 2^85178209034 is an apocalyptic number.

85178209034 is a deficient number, since it is larger than the sum of its proper divisors (42589104520).

85178209034 is a wasteful number, since it uses less digits than its factorization.

85178209034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42589104519.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 85178209034 in words is "eighty-five billion, one hundred seventy-eight million, two hundred nine thousand, thirty-four".