21882532540 has 24 divisors (see below), whose sum is σ = 50130893232. Its totient is φ = 7957284480.

The previous prime is 21882532513. The next prime is 21882532621. The reversal of 21882532540 is 4523528812.

It is a junction number, because it is equal to n+sod(n) for n = 21882532493 and 21882532502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49732809 + ... + 49733248.

It is an arithmetic number, because the mean of its divisors is an integer number (2088787218).

Almost surely, 2^21882532540 is an apocalyptic number.

21882532540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21882532540 is an abundant number, since it is smaller than the sum of its proper divisors (28248360692).

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

21882532540 is a wasteful number, since it uses less digits than its factorization.

21882532540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99466077 (or 99466075 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 21882532540 in words is "twenty-one billion, eight hundred eighty-two million, five hundred thirty-two thousand, five hundred forty".