215301561364 has 6 divisors (see below), whose sum is σ = 376777732394. Its totient is φ = 107650780680.

The previous prime is 215301561289. The next prime is 215301561407. The reversal of 215301561364 is 463165103512.

It can be written as a sum of positive squares in only one way, i.e., 189144968464 + 26156592900 = 434908^2 + 161730^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26912695167 + ... + 26912695174.

Almost surely, 2^215301561364 is an apocalyptic number.

It is an amenable number.

215301561364 is a deficient number, since it is larger than the sum of its proper divisors (161476171030).

215301561364 is a wasteful number, since it uses less digits than its factorization.

215301561364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53825390345 (or 53825390343 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 215301561364 its reverse (463165103512), we get a palindrome (678466664876).

The spelling of 215301561364 in words is "two hundred fifteen billion, three hundred one million, five hundred sixty-one thousand, three hundred sixty-four".