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12871524052381 = 157150315454343
BaseRepresentation
bin1011101101001110001010…
…0111100110110110011101
31200120111122122100011111011
42323103202213212312131
53141341340124134011
643213032503055221
72465636236146421
oct273234247466635
950514578304434
1012871524052381
114112867849795
12153a707441511
13724a19777937
14326db1120b81
15174c4051e621
hexbb4e29e6d9d

12871524052381 has 8 divisors (see below), whose sum is σ = 12954372443264. Its totient is φ = 12788686600560.

The previous prime is 12871524052369. The next prime is 12871524052399. The reversal of 12871524052381 is 18325042517821.

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 12871524052381 - 229 = 12870987181469 is a prime.

It is a super-2 number, since 2×128715240523812 (a number of 27 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 (12871524052181) 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, 367305 + ... + 5087038.

It is an arithmetic number, because the mean of its divisors is an integer number (1619296555408).

Almost surely, 212871524052381 is an apocalyptic number.

It is an amenable number.

12871524052381 is a deficient number, since it is larger than the sum of its proper divisors (82848390883).

12871524052381 is a wasteful number, since it uses less digits than its factorization.

12871524052381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469531.

The product of its (nonzero) digits is 1075200, while the sum is 49.

The spelling of 12871524052381 in words is "twelve trillion, eight hundred seventy-one billion, five hundred twenty-four million, fifty-two thousand, three hundred eighty-one".

Divisors: 1 157 15031 2359867 5454343 856331851 81984229633 12871524052381