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89968681437 = 361491632139
BaseRepresentation
bin101001111001010001…
…1010010000111011101
322121020001221120010120
41103302203102013131
52433223440301222
6105155301025153
76333336113535
oct1236243220735
9277201846116
1089968681437
1135178a7aa88
121552a3b51b9
13863a4a809b
1444d6aa84c5
15251874215c
hex14f28d21dd

89968681437 has 8 divisors (see below), whose sum is σ = 121924770720. Its totient is φ = 58995856560.

The previous prime is 89968681393. The next prime is 89968681441. The reversal of 89968681437 is 73418686998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 89968681437 - 210 = 89968680413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89968681487) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 245815887 + ... + 245816252.

It is an arithmetic number, because the mean of its divisors is an integer number (15240596340).

Almost surely, 289968681437 is an apocalyptic number.

It is an amenable number.

89968681437 is a deficient number, since it is larger than the sum of its proper divisors (31956089283).

89968681437 is a wasteful number, since it uses less digits than its factorization.

89968681437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491632203.

The product of its digits is 125411328, while the sum is 69.

The spelling of 89968681437 in words is "eighty-nine billion, nine hundred sixty-eight million, six hundred eighty-one thousand, four hundred thirty-seven".

Divisors: 1 3 61 183 491632139 1474896417 29989560479 89968681437