865525538358 has 48 divisors (see below), whose sum is σ = 2107366541280. Its totient is φ = 254736611712.

The previous prime is 865525538341. The next prime is 865525538377. The reversal of 865525538358 is 853835525568.

865525538358 is a `hidden beast` number, since 8 + 6 + 5 + 525 + 53 + 8 + 3 + 58 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 865525538295 and 865525538304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80403903 + ... + 80414666.

It is an arithmetic number, because the mean of its divisors is an integer number (43903469610).

Almost surely, 2^865525538358 is an apocalyptic number.

865525538358 is an abundant number, since it is smaller than the sum of its proper divisors (1241841002922).

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

865525538358 is a wasteful number, since it uses less digits than its factorization.

865525538358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160818613 (or 160818610 counting only the distinct ones).

The product of its digits is 172800000, while the sum is 63.

The spelling of 865525538358 in words is "eight hundred sixty-five billion, five hundred twenty-five million, five hundred thirty-eight thousand, three hundred fifty-eight".