7867159632 has 120 divisors (see below), whose sum is σ = 23942581416. Its totient is φ = 2401394688.

The previous prime is 7867159613. The next prime is 7867159639. The reversal of 7867159632 is 2369517687.

It can be written as a sum of positive squares in 4 ways, for example, as 3265436736 + 4601722896 = 57144^2 + 67836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7867159639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47148 + ... + 134004.

Almost surely, 2^7867159632 is an apocalyptic number.

7867159632 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7867159632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11971290708).

7867159632 is an abundant number, since it is smaller than the sum of its proper divisors (16075421784).

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

7867159632 is a wasteful number, since it uses less digits than its factorization.

7867159632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86925 (or 86916 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 7867159632 is about 88697.0102765589. The cubic root of 7867159632 is about 1988.8681249664.

The spelling of 7867159632 in words is "seven billion, eight hundred sixty-seven million, one hundred fifty-nine thousand, six hundred thirty-two".