85669632578 has 16 divisors (see below), whose sum is σ = 128714852736. Its totient is φ = 42764718000.

The previous prime is 85669632563. The next prime is 85669632661. The reversal of 85669632578 is 87523696658.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6561725 + ... + 6574767.

It is an arithmetic number, because the mean of its divisors is an integer number (8044678296).

Almost surely, 2^85669632578 is an apocalyptic number.

85669632578 is a deficient number, since it is larger than the sum of its proper divisors (43045220158).

85669632578 is a wasteful number, since it uses less digits than its factorization.

85669632578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18169.

The product of its digits is 130636800, while the sum is 65.

The spelling of 85669632578 in words is "eighty-five billion, six hundred sixty-nine million, six hundred thirty-two thousand, five hundred seventy-eight".