87945015215 has 4 divisors (see below), whose sum is σ = 105534018264. Its totient is φ = 70356012168.

The previous prime is 87945015097. The next prime is 87945015227. The reversal of 87945015215 is 51251054978.

It is a happy number.

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 87945015215 - 2⁸ = 87945014959 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 87945015215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8794501517 + ... + 8794501526.

It is an arithmetic number, because the mean of its divisors is an integer number (26383504566).

Almost surely, 2^87945015215 is an apocalyptic number.

87945015215 is a deficient number, since it is larger than the sum of its proper divisors (17589003049).

87945015215 is a wasteful number, since it uses less digits than its factorization.

87945015215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17589003048.

The product of its (nonzero) digits is 504000, while the sum is 47.

The spelling of 87945015215 in words is "eighty-seven billion, nine hundred forty-five million, fifteen thousand, two hundred fifteen".