215502352383 has 4 divisors (see below), whose sum is σ = 287336469848. Its totient is φ = 143668234920.

The previous prime is 215502352379. The next prime is 215502352421. The reversal of 215502352383 is 383253205512.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 215502352383 - 2² = 215502352379 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 (215502352333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35917058728 + ... + 35917058733.

It is an arithmetic number, because the mean of its divisors is an integer number (71834117462).

Almost surely, 2^215502352383 is an apocalyptic number.

215502352383 is a deficient number, since it is larger than the sum of its proper divisors (71834117465).

215502352383 is an equidigital number, since it uses as much as digits as its factorization.

215502352383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71834117464.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 215502352383 its reverse (383253205512), we get a palindrome (598755557895).

The spelling of 215502352383 in words is "two hundred fifteen billion, five hundred two million, three hundred fifty-two thousand, three hundred eighty-three".