87892105618 has 16 divisors (see below), whose sum is σ = 135419514264. Its totient is φ = 42752586240.

The previous prime is 87892105607. The next prime is 87892105619. The reversal of 87892105618 is 81650129878.

It can be written as a sum of positive squares in 4 ways, for example, as 68169554649 + 19722550969 = 261093^2 + 140437^2 .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (87892105619) 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, 504496 + ... + 655972.

Almost surely, 2^87892105618 is an apocalyptic number.

87892105618 is a deficient number, since it is larger than the sum of its proper divisors (47527408646).

87892105618 is a wasteful number, since it uses less digits than its factorization.

87892105618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159357.

The product of its (nonzero) digits is 1935360, while the sum is 55.

The spelling of 87892105618 in words is "eighty-seven billion, eight hundred ninety-two million, one hundred five thousand, six hundred eighteen".