215321605543364 has 24 divisors (see below), whose sum is σ = 393221678673600. Its totient is φ = 102973166477984.

The previous prime is 215321605543349. The next prime is 215321605543367. The reversal of 215321605543364 is 463345506123512.

It is not an unprimeable number, because it can be changed into a prime (215321605543367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75082859 + ... + 77897874.

It is an arithmetic number, because the mean of its divisors is an integer number (16384236611400).

Almost surely, 2^{215321605543364} is an apocalyptic number.

It is an amenable number.

215321605543364 is a deficient number, since it is larger than the sum of its proper divisors (177900073130236).

215321605543364 is a wasteful number, since it uses less digits than its factorization.

215321605543364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152996059 (or 152996057 counting only the distinct ones).

The product of its (nonzero) digits is 7776000, while the sum is 50.

The spelling of 215321605543364 in words is "two hundred fifteen trillion, three hundred twenty-one billion, six hundred five million, five hundred forty-three thousand, three hundred sixty-four".