215532814143 has 4 divisors (see below), whose sum is σ = 287377085528. Its totient is φ = 143688542760.

The previous prime is 215532814139. The next prime is 215532814207. The reversal of 215532814143 is 341418235512.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 215532814143 - 2² = 215532814139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215532814243) 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 3 ways as a sum of consecutive naturals, for example, 35922135688 + ... + 35922135693.

It is an arithmetic number, because the mean of its divisors is an integer number (71844271382).

Almost surely, 2^215532814143 is an apocalyptic number.

215532814143 is a deficient number, since it is larger than the sum of its proper divisors (71844271385).

215532814143 is an equidigital number, since it uses as much as digits as its factorization.

215532814143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71844271384.

The product of its digits is 115200, while the sum is 39.

The spelling of 215532814143 in words is "two hundred fifteen billion, five hundred thirty-two million, eight hundred fourteen thousand, one hundred forty-three".