215797508159 has 4 divisors (see below), whose sum is σ = 217121419416. Its totient is φ = 214473596904.

The previous prime is 215797508111. The next prime is 215797508189. The reversal of 215797508159 is 951805797512.

215797508159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 215797508159 - 2²⁴ = 215780730943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215797508098 and 215797508107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215797508189) 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 3 ways as a sum of consecutive naturals, for example, 661955384 + ... + 661955709.

It is an arithmetic number, because the mean of its divisors is an integer number (54280354854).

Almost surely, 2^215797508159 is an apocalyptic number.

215797508159 is a deficient number, since it is larger than the sum of its proper divisors (1323911257).

215797508159 is a wasteful number, since it uses less digits than its factorization.

215797508159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323911256.

The product of its (nonzero) digits is 7938000, while the sum is 59.

The spelling of 215797508159 in words is "two hundred fifteen billion, seven hundred ninety-seven million, five hundred eight thousand, one hundred fifty-nine".