89645555520 has 112 divisors (see below), whose sum is σ = 316249629120. Its totient is φ = 23905479168.

The previous prime is 89645555491. The next prime is 89645555533. The reversal of 89645555520 is 2555554698.

It is a happy number.

89645555520 is a `hidden beast` number, since 8 + 9 + 64 + 5 + 5 + 55 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 15 ways as a sum of consecutive naturals, for example, 5179182 + ... + 5196461.

Almost surely, 2^89645555520 is an apocalyptic number.

89645555520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89645555520 is an abundant number, since it is smaller than the sum of its proper divisors (226604073600).

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

89645555520 is a wasteful number, since it uses less digits than its factorization.

89645555520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10375669 (or 10375653 counting only the distinct ones).

The product of its (nonzero) digits is 10800000, while the sum is 54.

The spelling of 89645555520 in words is "eighty-nine billion, six hundred forty-five million, five hundred fifty-five thousand, five hundred twenty".