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5287508788405 = 52471414278941
BaseRepresentation
bin100110011110001100000…
…0101010100010010110101
3200201110222120121212011211
41030330120011110102311
51143112304222212110
615125014211401421
71054003253066134
oct114743005242265
920643876555154
105287508788405
111759468958698
12714907bb3271
132c47c10624bc
14143cb996191b
159281848098a
hex4cf181544b5

5287508788405 has 8 divisors (see below), whose sum is σ = 6345037702584. Its totient is φ = 4229988926400.

The previous prime is 5287508788403. The next prime is 5287508788421. The reversal of 5287508788405 is 5048878057825.

It can be written as a sum of positive squares in 4 ways, for example, as 3222603015921 + 2064905772484 = 1795161^2 + 1436978^2 .

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

It is not a de Polignac number, because 5287508788405 - 21 = 5287508788403 is a prime.

It is a super-2 number, since 2×52875087884052 (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5287508788403) 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, 903766 + ... + 3375175.

It is an arithmetic number, because the mean of its divisors is an integer number (793129712823).

Almost surely, 25287508788405 is an apocalyptic number.

It is an amenable number.

5287508788405 is a deficient number, since it is larger than the sum of its proper divisors (1057528914179).

5287508788405 is a wasteful number, since it uses less digits than its factorization.

5287508788405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526087.

The product of its (nonzero) digits is 200704000, while the sum is 67.

The spelling of 5287508788405 in words is "five trillion, two hundred eighty-seven billion, five hundred eight million, seven hundred eighty-eight thousand, four hundred five".

Divisors: 1 5 247141 1235705 4278941 21394705 1057501757681 5287508788405