85504204778 has 16 divisors (see below), whose sum is σ = 130312126080. Its totient is φ = 42071383200.

The previous prime is 85504204777. The next prime is 85504204801. The reversal of 85504204778 is 87740240558.

It is not an unprimeable number, because it can be changed into a prime (85504204777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100738 + ... + 1175853.

It is an arithmetic number, because the mean of its divisors is an integer number (8144507880).

Almost surely, 2^85504204778 is an apocalyptic number.

85504204778 is a deficient number, since it is larger than the sum of its proper divisors (44807921302).

85504204778 is a wasteful number, since it uses less digits than its factorization.

85504204778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276893.

The product of its (nonzero) digits is 2508800, while the sum is 50.

The spelling of 85504204778 in words is "eighty-five billion, five hundred four million, two hundred four thousand, seven hundred seventy-eight".