987618849866 has 32 divisors (see below), whose sum is σ = 1669787726976. Its totient is φ = 434243992000.

The previous prime is 987618849857. The next prime is 987618849881. The reversal of 987618849866 is 668948816789.

It is a super-2 number, since 2×987618849866² (a number of 25 digits) contains 22 as substring.

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, 5882105 + ... + 6047676.

It is an arithmetic number, because the mean of its divisors is an integer number (52180866468).

Almost surely, 2^987618849866 is an apocalyptic number.

987618849866 is a deficient number, since it is larger than the sum of its proper divisors (682168877110).

987618849866 is a wasteful number, since it uses less digits than its factorization.

987618849866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11929918.

The product of its digits is 2006581248, while the sum is 80.

The spelling of 987618849866 in words is "nine hundred eighty-seven billion, six hundred eighteen million, eight hundred forty-nine thousand, eight hundred sixty-six".