215129789383 has 4 divisors (see below), whose sum is σ = 215158340080. Its totient is φ = 215101238688.

The previous prime is 215129789341. The next prime is 215129789411. The reversal of 215129789383 is 383987921512.

It is a happy number.

215129789383 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 a de Polignac number, because none of the positive numbers 2^k-215129789383 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 (215129789333) 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, 14264043 + ... + 14279116.

It is an arithmetic number, because the mean of its divisors is an integer number (53789585020).

Almost surely, 2^215129789383 is an apocalyptic number.

215129789383 is a deficient number, since it is larger than the sum of its proper divisors (28550697).

215129789383 is an equidigital number, since it uses as much as digits as its factorization.

215129789383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28550696.

The product of its digits is 6531840, while the sum is 58.

The spelling of 215129789383 in words is "two hundred fifteen billion, one hundred twenty-nine million, seven hundred eighty-nine thousand, three hundred eighty-three".