215836130393 has 8 divisors (see below), whose sum is σ = 233302998600. Its totient is φ = 198492703488.

The previous prime is 215836130369. The next prime is 215836130431. The reversal of 215836130393 is 393031638512.

215836130393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 574465024 + 215261665369 = 23968^2 + 463963^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215836130393 - 2⁶ = 215836130329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215836130353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30856688 + ... + 30863681.

It is an arithmetic number, because the mean of its divisors is an integer number (29162874825).

Almost surely, 2^215836130393 is an apocalyptic number.

It is an amenable number.

215836130393 is a deficient number, since it is larger than the sum of its proper divisors (17466868207).

215836130393 is a wasteful number, since it uses less digits than its factorization.

215836130393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61720651.

The product of its (nonzero) digits is 349920, while the sum is 44.

The spelling of 215836130393 in words is "two hundred fifteen billion, eight hundred thirty-six million, one hundred thirty thousand, three hundred ninety-three".