868485523956 has 48 divisors (see below), whose sum is σ = 2143540258944. Its totient is φ = 273115155456.

The previous prime is 868485523921. The next prime is 868485523957. The reversal of 868485523956 is 659325584868.

It is a super-2 number, since 2×868485523956² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868485523957) 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, 21532501 + ... + 21572796.

It is an arithmetic number, because the mean of its divisors is an integer number (44657088728).

Almost surely, 2^868485523956 is an apocalyptic number.

It is an amenable number.

868485523956 is an abundant number, since it is smaller than the sum of its proper divisors (1275054734988).

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

868485523956 is a wasteful number, since it uses less digits than its factorization.

868485523956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43105400 (or 43105398 counting only the distinct ones).

The product of its digits is 497664000, while the sum is 69.

The spelling of 868485523956 in words is "eight hundred sixty-eight billion, four hundred eighty-five million, five hundred twenty-three thousand, nine hundred fifty-six".