85156500408 has 64 divisors (see below), whose sum is σ = 245578210560. Its totient is φ = 24103036416.

The previous prime is 85156500389. The next prime is 85156500427. The reversal of 85156500408 is 80400565158.

It is an interprime number because it is at equal distance from previous prime (85156500389) and next prime (85156500427).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 85156500408.

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, 2350641 + ... + 2386592.

It is an arithmetic number, because the mean of its divisors is an integer number (3837159540).

Almost surely, 2^85156500408 is an apocalyptic number.

It is an amenable number.

85156500408 is an abundant number, since it is smaller than the sum of its proper divisors (160421710152).

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

85156500408 is a wasteful number, since it uses less digits than its factorization.

85156500408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737356 (or 4737352 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 85156500408 in words is "eighty-five billion, one hundred fifty-six million, five hundred thousand, four hundred eight".