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12980472946 = 271138205103
BaseRepresentation
bin11000001011011001…
…00100110001110010
31020111122001100101021
430011230210301302
5203041000113241
65544012330054
7636445125310
oct140554446162
936448040337
1012980472946
1155611584a1
12262317392a
1312bb32592c
148b1d250b0
1550e8960d1
hex305b24c72

12980472946 has 16 divisors (see below), whose sum is σ = 22449164544. Its totient is φ = 5513828544.

The previous prime is 12980472943. The next prime is 12980472949. The reversal of 12980472946 is 64927408921.

It is an interprime number because it is at equal distance from previous prime (12980472943) and next prime (12980472949).

It is a junction number, because it is equal to n+sod(n) for n = 12980472893 and 12980472902.

It is not an unprimeable number, because it can be changed into a prime (12980472943) 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, 4100970 + ... + 4104133.

It is an arithmetic number, because the mean of its divisors is an integer number (1403072784).

Almost surely, 212980472946 is an apocalyptic number.

12980472946 is a deficient number, since it is larger than the sum of its proper divisors (9468691598).

12980472946 is a wasteful number, since it uses less digits than its factorization.

12980472946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205225.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 12980472946 in words is "twelve billion, nine hundred eighty million, four hundred seventy-two thousand, nine hundred forty-six".

Divisors: 1 2 7 14 113 226 791 1582 8205103 16410206 57435721 114871442 927176639 1854353278 6490236473 12980472946