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488134552821 = 323137223923063
BaseRepresentation
bin1110001101001110001…
…01100010110011110101
31201122221221021112122220
413012213011202303311
530444144421142241
61012125041312553
750160300145026
oct7064705426365
91648857245586
10488134552821
11179020258403
127a72b335759
1337052b37106
14198a942cc4d
15ca6e0e0166
hex71a7162cf5

488134552821 has 32 divisors (see below), whose sum is σ = 684436193280. Its totient is φ = 308850731904.

The previous prime is 488134552813. The next prime is 488134552849. The reversal of 488134552821 is 128255431884.

It is a happy number.

It is not a de Polignac number, because 488134552821 - 23 = 488134552813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (488134550821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21153736 + ... + 21176798.

It is an arithmetic number, because the mean of its divisors is an integer number (21388631040).

Almost surely, 2488134552821 is an apocalyptic number.

It is an amenable number.

488134552821 is a deficient number, since it is larger than the sum of its proper divisors (196301640459).

488134552821 is a wasteful number, since it uses less digits than its factorization.

488134552821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25465.

The product of its digits is 2457600, while the sum is 51.

The spelling of 488134552821 in words is "four hundred eighty-eight billion, one hundred thirty-four million, five hundred fifty-two thousand, eight hundred twenty-one".

Divisors: 1 3 23 69 137 411 2239 3151 6717 9453 23063 51497 69189 154491 306743 530449 920229 1591347 3159631 7055089 9478893 21165267 51638057 72671513 154914171 218014539 1187675311 3563025933 7074413809 21223241427 162711517607 488134552821