867690215618532 has 96 divisors (see below), whose sum is σ = 2117792144160000. Its totient is φ = 276151023235584.

The previous prime is 867690215618531. The next prime is 867690215618549. The reversal of 867690215618532 is 235816512096768.

It is a super-2 number, since 2×867690215618532² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (867690215618531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3163032 + ... + 41777807.

It is an arithmetic number, because the mean of its divisors is an integer number (22060334835000).

Almost surely, 2^{867690215618532} 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 867690215618532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058896072080000).

867690215618532 is an abundant number, since it is smaller than the sum of its proper divisors (1250101928541468).

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

867690215618532 is a wasteful number, since it uses less digits than its factorization.

867690215618532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44941493 (or 44941491 counting only the distinct ones).

The product of its (nonzero) digits is 261273600, while the sum is 69.

The spelling of 867690215618532 in words is "eight hundred sixty-seven trillion, six hundred ninety billion, two hundred fifteen million, six hundred eighteen thousand, five hundred thirty-two".