215542521132 has 48 divisors (see below), whose sum is σ = 503547714432. Its totient is φ = 71759692800.

The previous prime is 215542521119. The next prime is 215542521137. The reversal of 215542521132 is 231125245512.

215542521132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×215542521132² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 215542521093 and 215542521102.

It is not an unprimeable number, because it can be changed into a prime (215542521137) 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, 60765783 + ... + 60769329.

It is an arithmetic number, because the mean of its divisors is an integer number (10490577384).

Almost surely, 2^215542521132 is an apocalyptic number.

It is an amenable number.

215542521132 is an abundant number, since it is smaller than the sum of its proper divisors (288005193300).

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

215542521132 is a wasteful number, since it uses less digits than its factorization.

215542521132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8318 (or 8316 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

Adding to 215542521132 its reverse (231125245512), we get a palindrome (446667766644).

The spelling of 215542521132 in words is "two hundred fifteen billion, five hundred forty-two million, five hundred twenty-one thousand, one hundred thirty-two".