87615573018 has 16 divisors (see below), whose sum is σ = 175244608416. Its totient is φ = 29202947280.

The previous prime is 87615573011. The next prime is 87615573061. The reversal of 87615573018 is 81037551678.

It is not an unprimeable number, because it can be changed into a prime (87615573011) 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, 475321 + ... + 633372.

It is an arithmetic number, because the mean of its divisors is an integer number (10952788026).

Almost surely, 2^87615573018 is an apocalyptic number.

87615573018 is an abundant number, since it is smaller than the sum of its proper divisors (87629035398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87615573018 is a wasteful number, since it uses less digits than its factorization.

87615573018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121869.

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 87615573018 in words is "eighty-seven billion, six hundred fifteen million, five hundred seventy-three thousand, eighteen".