Search a number
-
+
89005754881 is a prime number
BaseRepresentation
bin101001011100100101…
…0000000101000000001
322111201222000211020001
41102321022000220001
52424240433124011
6104515542120001
76300434301511
oct1227112005001
9274658024201
1089005754881
113482447900a
12152bba20001
138515b4b664
144444c4b841
1524ade357c1
hex14b9280a01

89005754881 has 2 divisors, whose sum is σ = 89005754882. Its totient is φ = 89005754880.

The previous prime is 89005754879. The next prime is 89005754909. The reversal of 89005754881 is 18845750098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49490676225 + 39515078656 = 222465^2 + 198784^2 .

It is a cyclic number.

It is not a de Polignac number, because 89005754881 - 21 = 89005754879 is a prime.

It is a super-2 number, since 2×890057548812 (a number of 23 digits) contains 22 as substring.

Together with 89005754879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (89005754801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44502877440 + 44502877441.

It is an arithmetic number, because the mean of its divisors is an integer number (44502877441).

Almost surely, 289005754881 is an apocalyptic number.

It is an amenable number.

89005754881 is a deficient number, since it is larger than the sum of its proper divisors (1).

89005754881 is an equidigital number, since it uses as much as digits as its factorization.

89005754881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3225600, while the sum is 55.

The spelling of 89005754881 in words is "eighty-nine billion, five million, seven hundred fifty-four thousand, eight hundred eighty-one".