87381500018 has 8 divisors (see below), whose sum is σ = 134269134300. Its totient is φ = 42625121920.

The previous prime is 87381499993. The next prime is 87381500021. The reversal of 87381500018 is 81000518378.

It can be written as a sum of positive squares in 2 ways, for example, as 87365762929 + 15737089 = 295577^2 + 3967^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532813943 + ... + 532814106.

Almost surely, 2^87381500018 is an apocalyptic number.

87381500018 is a deficient number, since it is larger than the sum of its proper divisors (46887634282).

87381500018 is a wasteful number, since it uses less digits than its factorization.

87381500018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065628092.

The product of its (nonzero) digits is 53760, while the sum is 41.

The spelling of 87381500018 in words is "eighty-seven billion, three hundred eighty-one million, five hundred thousand, eighteen".