85642416508 has 24 divisors (see below), whose sum is σ = 163539008640. Its totient is φ = 38918883120.

The previous prime is 85642416499. The next prime is 85642416529. The reversal of 85642416508 is 80561424658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53016 + ... + 417247.

It is an arithmetic number, because the mean of its divisors is an integer number (6814125360).

Almost surely, 2^85642416508 is an apocalyptic number.

It is an amenable number.

85642416508 is a deficient number, since it is larger than the sum of its proper divisors (77896592132).

85642416508 is a wasteful number, since it uses less digits than its factorization.

85642416508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474417 (or 474415 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 85642416508 in words is "eighty-five billion, six hundred forty-two million, four hundred sixteen thousand, five hundred eight".