868410387252 has 120 divisors (see below), whose sum is σ = 2404246876416. Its totient is φ = 272384716032.

The previous prime is 868410387241. The next prime is 868410387281. The reversal of 868410387252 is 252783014868.

868410387252 is a `hidden beast` number, since 8 + 6 + 8 + 4 + 1 + 0 + 387 + 252 = 666.

It is a super-2 number, since 2×868410387252² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31288093 + ... + 31315835.

Almost surely, 2^868410387252 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 868410387252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1202123438208).

868410387252 is an abundant number, since it is smaller than the sum of its proper divisors (1535836489164).

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

868410387252 is a wasteful number, since it uses less digits than its factorization.

868410387252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33459 (or 33448 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 868410387252 in words is "eight hundred sixty-eight billion, four hundred ten million, three hundred eighty-seven thousand, two hundred fifty-two".