89717591040 has 704 divisors, whose sum is σ = 369455136768. Its totient is φ = 18033868800.

The previous prime is 89717591027. The next prime is 89717591059. The reversal of 89717591040 is 4019571798.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (704).

It is a super-2 number, since 2×89717591040² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36663097 + ... + 36665543.

Almost surely, 2^89717591040 is an apocalyptic number.

89717591040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89717591040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184727568384).

89717591040 is an abundant number, since it is smaller than the sum of its proper divisors (279737545728).

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

89717591040 is a wasteful number, since it uses less digits than its factorization.

89717591040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524 (or 2506 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 51.

The spelling of 89717591040 in words is "eighty-nine billion, seven hundred seventeen million, five hundred ninety-one thousand, forty".