85517065420 has 24 divisors (see below), whose sum is σ = 189037724400. Its totient is φ = 32406466752.

The previous prime is 85517065393. The next prime is 85517065423. The reversal of 85517065420 is 2456071558.

It is not an unprimeable number, because it can be changed into a prime (85517065423) 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, 112522075 + ... + 112522834.

It is an arithmetic number, because the mean of its divisors is an integer number (7876571850).

Almost surely, 2^85517065420 is an apocalyptic number.

It is an amenable number.

85517065420 is an abundant number, since it is smaller than the sum of its proper divisors (103520658980).

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

85517065420 is a wasteful number, since it uses less digits than its factorization.

85517065420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225044937 (or 225044935 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 85517065420 in words is "eighty-five billion, five hundred seventeen million, sixty-five thousand, four hundred twenty".