87965815858 has 16 divisors (see below), whose sum is σ = 138911760000. Its totient is φ = 41662508112.

The previous prime is 87965815831. The next prime is 87965815879. The reversal of 87965815858 is 85851856978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145668 + ... + 444016.

It is an arithmetic number, because the mean of its divisors is an integer number (8681985000).

Almost surely, 2^87965815858 is an apocalyptic number.

87965815858 is a deficient number, since it is larger than the sum of its proper divisors (50945944142).

87965815858 is a wasteful number, since it uses less digits than its factorization.

87965815858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306129.

The product of its digits is 193536000, while the sum is 70.

The spelling of 87965815858 in words is "eighty-seven billion, nine hundred sixty-five million, eight hundred fifteen thousand, eight hundred fifty-eight".