85424517870 has 32 divisors (see below), whose sum is σ = 212088460320. Its totient is φ = 21994358400.

The previous prime is 85424517847. The next prime is 85424517953. The reversal of 85424517870 is 7871542458.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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, 49093681 + ... + 49095420.

It is an arithmetic number, because the mean of its divisors is an integer number (6627764385).

Almost surely, 2^85424517870 is an apocalyptic number.

85424517870 is an abundant number, since it is smaller than the sum of its proper divisors (126663942450).

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

85424517870 is a wasteful number, since it uses less digits than its factorization.

85424517870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98189140.

The product of its (nonzero) digits is 2508800, while the sum is 51.

The spelling of 85424517870 in words is "eighty-five billion, four hundred twenty-four million, five hundred seventeen thousand, eight hundred seventy".