215491492183 has 12 divisors (see below), whose sum is σ = 241331661144. Its totient is φ = 192205098800.

The previous prime is 215491492147. The next prime is 215491492201. The reversal of 215491492183 is 381294194512.

215491492183 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-215491492183 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 (215491492283) 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 11 ways as a sum of consecutive naturals, for example, 16794733 + ... + 16807558.

It is an arithmetic number, because the mean of its divisors is an integer number (20110971762).

Almost surely, 2^215491492183 is an apocalyptic number.

215491492183 is a deficient number, since it is larger than the sum of its proper divisors (25840168961).

215491492183 is a wasteful number, since it uses less digits than its factorization.

215491492183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33602366 (or 33602355 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The spelling of 215491492183 in words is "two hundred fifteen billion, four hundred ninety-one million, four hundred ninety-two thousand, one hundred eighty-three".