215056141252643 has 4 divisors (see below), whose sum is σ = 215075782887600. Its totient is φ = 215036499617688.

The previous prime is 215056141252633. The next prime is 215056141252681. The reversal of 215056141252643 is 346252141650512.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 215056141252643 - 2²⁰ = 215056140204067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215056141252633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9820801055 + ... + 9820822952.

It is an arithmetic number, because the mean of its divisors is an integer number (53768945721900).

Almost surely, 2^{215056141252643} is an apocalyptic number.

215056141252643 is a deficient number, since it is larger than the sum of its proper divisors (19641634957).

215056141252643 is a wasteful number, since it uses less digits than its factorization.

215056141252643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19641634956.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 215056141252643 in words is "two hundred fifteen trillion, fifty-six billion, one hundred forty-one million, two hundred fifty-two thousand, six hundred forty-three".