215343255543 has 48 divisors (see below), whose sum is σ = 325013762304. Its totient is φ = 126528230400.

The previous prime is 215343255539. The next prime is 215343255553. The reversal of 215343255543 is 345552343512.

It is not a de Polignac number, because 215343255543 - 2² = 215343255539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215343255495 and 215343255504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215343255553) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 6548743 + ... + 6581543.

It is an arithmetic number, because the mean of its divisors is an integer number (6771120048).

Almost surely, 2^215343255543 is an apocalyptic number.

215343255543 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

215343255543 is a deficient number, since it is larger than the sum of its proper divisors (109670506761).

215343255543 is a wasteful number, since it uses less digits than its factorization.

215343255543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33416 (or 33403 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 42.

The spelling of 215343255543 in words is "two hundred fifteen billion, three hundred forty-three million, two hundred fifty-five thousand, five hundred forty-three".