89831965550 has 24 divisors (see below), whose sum is σ = 171162763632. Its totient is φ = 35056376000.

The previous prime is 89831965547. The next prime is 89831965589. The reversal of 89831965550 is 5556913898.

It is a self number, because there is not a number n which added to its sum of digits gives 89831965550.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 21908186 + ... + 21912285.

It is an arithmetic number, because the mean of its divisors is an integer number (7131781818).

Almost surely, 2^89831965550 is an apocalyptic number.

89831965550 is a deficient number, since it is larger than the sum of its proper divisors (81330798082).

89831965550 is a wasteful number, since it uses less digits than its factorization.

89831965550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43820524 (or 43820519 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 59.

The spelling of 89831965550 in words is "eighty-nine billion, eight hundred thirty-one million, nine hundred sixty-five thousand, five hundred fifty".