215679459843 has 6 divisors (see below), whose sum is σ = 311536997564. Its totient is φ = 143786306556.

The previous prime is 215679459839. The next prime is 215679459857. The reversal of 215679459843 is 348954976512.

215679459843 is a `hidden beast` number, since 21 + 56 + 79 + 459 + 8 + 43 = 666.

It is not a de Polignac number, because 215679459843 - 2² = 215679459839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215679459803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11982192205 + ... + 11982192222.

Almost surely, 2^215679459843 is an apocalyptic number.

215679459843 is a deficient number, since it is larger than the sum of its proper divisors (95857537721).

215679459843 is a wasteful number, since it uses less digits than its factorization.

215679459843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23964384433 (or 23964384430 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 63.

The spelling of 215679459843 in words is "two hundred fifteen billion, six hundred seventy-nine million, four hundred fifty-nine thousand, eight hundred forty-three".