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88911981325 = 523556479253
BaseRepresentation
bin101001011001110010…
…0010010101100001101
322111111102120122002101
41102303210102230031
52424042431400300
6104502352155101
76265215241306
oct1226344225415
9274442518071
1088911981325
113478654a602
1215294538a91
1384cc5a7c4b
1444365db7ad
1524a5ab0b6a
hex14b3912b0d

88911981325 has 6 divisors (see below), whose sum is σ = 110250856874. Its totient is φ = 71129585040.

The previous prime is 88911981311. The next prime is 88911981329. The reversal of 88911981325 is 52318911988.

It can be written as a sum of positive squares in 3 ways, for example, as 10066710889 + 78845270436 = 100333^2 + 280794^2 .

It is not a de Polignac number, because 88911981325 - 29 = 88911980813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88911981329) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1778239602 + ... + 1778239651.

Almost surely, 288911981325 is an apocalyptic number.

It is an amenable number.

88911981325 is a deficient number, since it is larger than the sum of its proper divisors (21338875549).

88911981325 is a wasteful number, since it uses less digits than its factorization.

88911981325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556479263 (or 3556479258 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 55.

The spelling of 88911981325 in words is "eighty-eight billion, nine hundred eleven million, nine hundred eighty-one thousand, three hundred twenty-five".

Divisors: 1 5 25 3556479253 17782396265 88911981325