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12639084480 = 263451197457
BaseRepresentation
bin10111100010101100…
…10001111111000000
31012121211200000110000
423301112101333000
5201341101200410
65450055240000
7625131305541
oct136126217700
935554600400
1012639084480
1153a6485270
122548979000
131265696319
1487c85a4c8
154de90ddc0
hex2f1591fc0

12639084480 has 560 divisors, whose sum is σ = 49660734816. Its totient is φ = 3025797120.

The previous prime is 12639084443. The next prime is 12639084509. The reversal of 12639084480 is 8448093621.

It is a happy number.

12639084480 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 90 + 84 + 480 = 666.

12639084480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 27656412 + ... + 27656868.

Almost surely, 212639084480 is an apocalyptic number.

12639084480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12639084480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24830367408).

12639084480 is an abundant number, since it is smaller than the sum of its proper divisors (37021650336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12639084480 is a wasteful number, since it uses less digits than its factorization.

12639084480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 575 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 12639084480 in words is "twelve billion, six hundred thirty-nine million, eighty-four thousand, four hundred eighty".