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12458381405 = 517339143223
BaseRepresentation
bin10111001101001001…
…11101000001011101
31012011020122100102112
423212210331001131
5201003321201110
65420122203405
7620505331451
oct134644750135
935136570375
1012458381405
115313482388
1224b8353565
131237107422
1486285c661
154cdb17405
hex2e693d05d

12458381405 has 16 divisors (see below), whose sum is σ = 15834507264. Its totient is φ = 9377445120.

The previous prime is 12458381381. The next prime is 12458381417. The reversal of 12458381405 is 50418385421.

It is a de Polignac number, because none of the positive numbers 2k-12458381405 is a prime.

It is a super-2 number, since 2×124583814052 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266624 + ... + 309846.

It is an arithmetic number, because the mean of its divisors is an integer number (989656704).

Almost surely, 212458381405 is an apocalyptic number.

It is an amenable number.

12458381405 is a deficient number, since it is larger than the sum of its proper divisors (3376125859).

12458381405 is a wasteful number, since it uses less digits than its factorization.

12458381405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46636.

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 12458381405 in words is "twelve billion, four hundred fifty-eight million, three hundred eighty-one thousand, four hundred five".

Divisors: 1 5 17 85 3391 16955 43223 57647 216115 288235 734791 3673955 146569193 732845965 2491676281 12458381405