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12790258478 = 259108392021
BaseRepresentation
bin10111110100101101…
…11101101100101110
31020000101010110011222
423322112331230232
5202143301232403
65513055343342
7631645255214
oct137226755456
936011113158
1012790258478
115473849558
12258b521b52
13128aab66aa
1489496ccb4
154ecd21338
hex2fa5bdb2e

12790258478 has 8 divisors (see below), whose sum is σ = 19510563960. Its totient is φ = 6286737160.

The previous prime is 12790258423. The next prime is 12790258493. The reversal of 12790258478 is 87485209721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54195893 + ... + 54196128.

It is an arithmetic number, because the mean of its divisors is an integer number (2438820495).

Almost surely, 212790258478 is an apocalyptic number.

12790258478 is a deficient number, since it is larger than the sum of its proper divisors (6720305482).

12790258478 is a wasteful number, since it uses less digits than its factorization.

12790258478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108392082.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 12790258478 in words is "twelve billion, seven hundred ninety million, two hundred fifty-eight thousand, four hundred seventy-eight".

Divisors: 1 2 59 118 108392021 216784042 6395129239 12790258478