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23171451485 = 572137275181
BaseRepresentation
bin10101100101001000…
…000100101001011101
32012210212011200210212
4111211020010221131
5334423342421420
614351140342205
71450132042100
oct254510045135
965725150725
1023171451485
119910753506
1245a80a4965
13225375c050
14119b59c737
159093ca3c5
hex565204a5d

23171451485 has 24 divisors (see below), whose sum is σ = 34833571416. Its totient is φ = 14666762880.

The previous prime is 23171451461. The next prime is 23171451497. The reversal of 23171451485 is 58415417132.

It can be written as a sum of positive squares in 4 ways, for example, as 472714564 + 22698736921 = 21742^2 + 150661^2 .

It is not a de Polignac number, because 23171451485 - 226 = 23104342621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3634406 + ... + 3640775.

It is an arithmetic number, because the mean of its divisors is an integer number (1451398809).

Almost surely, 223171451485 is an apocalyptic number.

It is an amenable number.

23171451485 is a deficient number, since it is larger than the sum of its proper divisors (11662119931).

23171451485 is a wasteful number, since it uses less digits than its factorization.

23171451485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7275213 (or 7275206 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The spelling of 23171451485 in words is "twenty-three billion, one hundred seventy-one million, four hundred fifty-one thousand, four hundred eighty-five".

Divisors: 1 5 7 13 35 49 65 91 245 455 637 3185 7275181 36375905 50926267 94577353 254631335 356483869 472886765 662041471 1782419345 3310207355 4634290297 23171451485