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13260421461 = 3719316311699
BaseRepresentation
bin11000101100110000…
…11111100101010101
31021020010211012112210
430112120133211111
5204124131441321
610031452504033
7646414502610
oct142630374525
937203735483
1013260421461
115695186a01
1226a0a7b019
131334322a41
148db199177
15529243b76
hex31661f955

13260421461 has 64 divisors (see below), whose sum is σ = 22003712000. Its totient is φ = 6931915200.

The previous prime is 13260421459. The next prime is 13260421483. The reversal of 13260421461 is 16412406231.

It is not a de Polignac number, because 13260421461 - 21 = 13260421459 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13260421451) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7803990 + ... + 7805688.

It is an arithmetic number, because the mean of its divisors is an integer number (343808000).

Almost surely, 213260421461 is an apocalyptic number.

It is an amenable number.

13260421461 is a deficient number, since it is larger than the sum of its proper divisors (8743290539).

13260421461 is a wasteful number, since it uses less digits than its factorization.

13260421461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390.

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 13260421461 its reverse (16412406231), we get a palindrome (29672827692).

The spelling of 13260421461 in words is "thirteen billion, two hundred sixty million, four hundred twenty-one thousand, four hundred sixty-one".

Divisors: 1 3 7 19 21 31 57 93 133 217 399 589 631 651 1699 1767 1893 4123 4417 5097 11893 11989 12369 13251 19561 32281 35679 35967 52669 58683 83923 96843 136927 158007 225967 251769 368683 371659 410781 677901 1000711 1072069 1106049 1114977 2601613 3002133 3216207 7004977 7504483 7804839 20369311 21014931 22513449 33234139 61107933 99702417 142585177 232638973 427755531 631448641 697916919 1894345923 4420140487 13260421461