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12557982589 = 231777307259
BaseRepresentation
bin10111011001000001…
…11001101101111101
31012102012001121120021
423230200321231331
5201204320420324
65434041052141
7623125043065
oct135440715575
935365047507
1012557982589
115364721209
122525787051
13125193b539
14871b883a5
154d773dae4
hex2ec839b7d

12557982589 has 8 divisors (see below), whose sum is σ = 13111398720. Its totient is φ = 12005184576.

The previous prime is 12557982581. The next prime is 12557982599. The reversal of 12557982589 is 98528975521.

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

It is a cyclic number.

It is not a de Polignac number, because 12557982589 - 23 = 12557982581 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 (12557982581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112759 + ... + 194500.

It is an arithmetic number, because the mean of its divisors is an integer number (1638924840).

Almost surely, 212557982589 is an apocalyptic number.

It is an amenable number.

12557982589 is a deficient number, since it is larger than the sum of its proper divisors (553416131).

12557982589 is a wasteful number, since it uses less digits than its factorization.

12557982589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309059.

The product of its digits is 18144000, while the sum is 61.

The spelling of 12557982589 in words is "twelve billion, five hundred fifty-seven million, nine hundred eighty-two thousand, five hundred eighty-nine".

Divisors: 1 23 1777 40871 307259 7066957 545999243 12557982589