87178291215 has 16 divisors (see below), whose sum is σ = 141771911136. Its totient is φ = 45732873600.

The previous prime is 87178291199. The next prime is 87178291219. The reversal of 87178291215 is 51219287178.

It is not a de Polignac number, because 87178291215 - 2⁴ = 87178291199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87178291219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47637496 + ... + 47639325.

It is an arithmetic number, because the mean of its divisors is an integer number (8860744446).

Almost surely, 2^87178291215 is an apocalyptic number.

87178291215 is a deficient number, since it is larger than the sum of its proper divisors (54593619921).

87178291215 is a wasteful number, since it uses less digits than its factorization.

87178291215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95276890.

The product of its digits is 564480, while the sum is 51.

The spelling of 87178291215 in words is "eighty-seven billion, one hundred seventy-eight million, two hundred ninety-one thousand, two hundred fifteen".