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12887411542 = 219675061827
BaseRepresentation
bin11000000000010011…
…00100101101010110
31020021010221100010121
430000021210231112
5202343134132132
65530445542154
7634235122255
oct140011445526
936233840117
1012887411542
115513676045
1225b7b7495a
1312a4c71405
148a381c79c
15506612497
hex300264b56

12887411542 has 16 divisors (see below), whose sum is σ = 20652258240. Its totient is φ = 6013449288.

The previous prime is 12887411533. The next prime is 12887411557. The reversal of 12887411542 is 24511478821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2528368 + ... + 2533459.

It is an arithmetic number, because the mean of its divisors is an integer number (1290766140).

Almost surely, 212887411542 is an apocalyptic number.

12887411542 is a deficient number, since it is larger than the sum of its proper divisors (7764846698).

12887411542 is a wasteful number, since it uses less digits than its factorization.

12887411542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061915.

The product of its digits is 143360, while the sum is 43.

The spelling of 12887411542 in words is "twelve billion, eight hundred eighty-seven million, four hundred eleven thousand, five hundred forty-two".

Divisors: 1 2 19 38 67 134 1273 2546 5061827 10123654 96174713 192349426 339142409 678284818 6443705771 12887411542