89878693816 has 32 divisors (see below), whose sum is σ = 176789109600. Its totient is φ = 42778583680.

The previous prime is 89878693777. The next prime is 89878693841. The reversal of 89878693816 is 61839687898.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2711755 + ... + 2744698.

It is an arithmetic number, because the mean of its divisors is an integer number (5524659675).

Almost surely, 2^89878693816 is an apocalyptic number.

It is an amenable number.

89878693816 is a deficient number, since it is larger than the sum of its proper divisors (86910415784).

89878693816 is a wasteful number, since it uses less digits than its factorization.

89878693816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5456559 (or 5456555 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 73.

The spelling of 89878693816 in words is "eighty-nine billion, eight hundred seventy-eight million, six hundred ninety-three thousand, eight hundred sixteen".