215144856359 has 4 divisors (see below), whose sum is σ = 216164500440. Its totient is φ = 214125212280.

The previous prime is 215144856319. The next prime is 215144856371. The reversal of 215144856359 is 953658441512.

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 215144856359 - 2⁸ = 215144856103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215144856359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215144856319) 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, 509821724 + ... + 509822145.

It is an arithmetic number, because the mean of its divisors is an integer number (54041125110).

Almost surely, 2^215144856359 is an apocalyptic number.

215144856359 is a deficient number, since it is larger than the sum of its proper divisors (1019644081).

215144856359 is a wasteful number, since it uses less digits than its factorization.

215144856359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019644080.

The product of its digits is 5184000, while the sum is 53.

The spelling of 215144856359 in words is "two hundred fifteen billion, one hundred forty-four million, eight hundred fifty-six thousand, three hundred fifty-nine".