85415545578 has 32 divisors (see below), whose sum is σ = 186374768832. Its totient is φ = 25881612800.

The previous prime is 85415545561. The next prime is 85415545609. The reversal of 85415545578 is 87554551458.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1061608 + ... + 1139228.

It is an arithmetic number, because the mean of its divisors is an integer number (5824211526).

Almost surely, 2^85415545578 is an apocalyptic number.

85415545578 is an abundant number, since it is smaller than the sum of its proper divisors (100959223254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85415545578 is a wasteful number, since it uses less digits than its factorization.

85415545578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94310.

The product of its digits is 22400000, while the sum is 57.

The spelling of 85415545578 in words is "eighty-five billion, four hundred fifteen million, five hundred forty-five thousand, five hundred seventy-eight".