89481751440 has 80 divisors (see below), whose sum is σ = 279577724928. Its totient is φ = 23673904128.

The previous prime is 89481751433. The next prime is 89481751477. The reversal of 89481751440 is 4415718498.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 1437397 + ... + 1498356.

Almost surely, 2^89481751440 is an apocalyptic number.

89481751440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89481751440 is an abundant number, since it is smaller than the sum of its proper divisors (190095973488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89481751440 is a wasteful number, since it uses less digits than its factorization.

89481751440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935896 (or 2935890 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 89481751440 in words is "eighty-nine billion, four hundred eighty-one million, seven hundred fifty-one thousand, four hundred forty".