87731008885018 has 32 divisors (see below), whose sum is σ = 136189069166592. Its totient is φ = 42341965142400.

The previous prime is 87731008884947. The next prime is 87731008885027. The reversal of 87731008885018 is 81058880013778.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71761680 + ... + 72973972.

It is an arithmetic number, because the mean of its divisors is an integer number (4255908411456).

Almost surely, 2^{87731008885018} is an apocalyptic number.

87731008885018 is a deficient number, since it is larger than the sum of its proper divisors (48458060281574).

87731008885018 is a wasteful number, since it uses less digits than its factorization.

87731008885018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215310.

The product of its (nonzero) digits is 24084480, while the sum is 64.

The spelling of 87731008885018 in words is "eighty-seven trillion, seven hundred thirty-one billion, eight million, eight hundred eighty-five thousand, eighteen".