32865378858 has 160 divisors (see below), whose sum is σ = 83777379840. Its totient is φ = 9546284160.

The previous prime is 32865378857. The next prime is 32865378863. The reversal of 32865378858 is 85887356823.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 32865378795 and 32865378804.

It is not an unprimeable number, because it can be changed into a prime (32865378857) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12683143 + ... + 12685733.

It is an arithmetic number, because the mean of its divisors is an integer number (523608624).

Almost surely, 2^32865378858 is an apocalyptic number.

32865378858 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 32865378858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41888689920).

32865378858 is an abundant number, since it is smaller than the sum of its proper divisors (50912000982).

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

32865378858 is a wasteful number, since it uses less digits than its factorization.

32865378858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954 (or 2945 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 63.

The spelling of 32865378858 in words is "thirty-two billion, eight hundred sixty-five million, three hundred seventy-eight thousand, eight hundred fifty-eight".