215532342044540 has 24 divisors (see below), whose sum is σ = 452625502467600. Its totient is φ = 86211492213248.

The previous prime is 215532342044533. The next prime is 215532342044567. The reversal of 215532342044540 is 45440243235512.

It is a junction number, because it is equal to n+sod(n) for n = 215532342044491 and 215532342044500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89063957 + ... + 91451916.

It is an arithmetic number, because the mean of its divisors is an integer number (18859395936150).

Almost surely, 2^{215532342044540} is an apocalyptic number.

215532342044540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215532342044540 is an abundant number, since it is smaller than the sum of its proper divisors (237093160423060).

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

215532342044540 is a wasteful number, since it uses less digits than its factorization.

215532342044540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180575581 (or 180575579 counting only the distinct ones).

The product of its (nonzero) digits is 2304000, while the sum is 44.

The spelling of 215532342044540 in words is "two hundred fifteen trillion, five hundred thirty-two billion, three hundred forty-two million, forty-four thousand, five hundred forty".