87315210215 has 4 divisors (see below), whose sum is σ = 104778252264. Its totient is φ = 69852168168.

The previous prime is 87315210209. The next prime is 87315210217. The reversal of 87315210215 is 51201251378.

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 87315210215 - 2¹² = 87315206119 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 (87315210217) 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, 8731521017 + ... + 8731521026.

It is an arithmetic number, because the mean of its divisors is an integer number (26194563066).

Almost surely, 2^87315210215 is an apocalyptic number.

87315210215 is a deficient number, since it is larger than the sum of its proper divisors (17463042049).

87315210215 is a wasteful number, since it uses less digits than its factorization.

87315210215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17463042048.

The product of its (nonzero) digits is 16800, while the sum is 35.

The spelling of 87315210215 in words is "eighty-seven billion, three hundred fifteen million, two hundred ten thousand, two hundred fifteen".