85868201873840 has 80 divisors (see below), whose sum is σ = 199838068732512. Its totient is φ = 34313827172352.

The previous prime is 85868201873827. The next prime is 85868201873849. The reversal of 85868201873840 is 4837810286858.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (85868201873849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673375367 + ... + 673502873.

Almost surely, 2^{85868201873840} is an apocalyptic number.

85868201873840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85868201873840 is an abundant number, since it is smaller than the sum of its proper divisors (113969866858672).

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

85868201873840 is a wasteful number, since it uses less digits than its factorization.

85868201873840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135654 (or 135648 counting only the distinct ones).

The product of its (nonzero) digits is 165150720, while the sum is 68.

The spelling of 85868201873840 in words is "eighty-five trillion, eight hundred sixty-eight billion, two hundred one million, eight hundred seventy-three thousand, eight hundred forty".