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12790692589 = 40131896989
BaseRepresentation
bin10111110100110001…
…00111101011101101
31020000101221111200011
423322120213223231
5202143404130324
65513112533221
7631652043643
oct137230475355
936011844604
1012790692589
115474015724
12258b6b1211
13128ac0916c
14894a43193
154ecda9c94
hex2fa627aed

12790692589 has 4 divisors (see below), whose sum is σ = 12822589980. Its totient is φ = 12758795200.

The previous prime is 12790692571. The next prime is 12790692617. The reversal of 12790692589 is 98529609721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9198728100 + 3591964489 = 95910^2 + 59933^2 .

It is a cyclic number.

It is not a de Polignac number, because 12790692589 - 27 = 12790692461 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12790692539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15948094 + ... + 15948895.

It is an arithmetic number, because the mean of its divisors is an integer number (3205647495).

Almost surely, 212790692589 is an apocalyptic number.

It is an amenable number.

12790692589 is a deficient number, since it is larger than the sum of its proper divisors (31897391).

12790692589 is an equidigital number, since it uses as much as digits as its factorization.

12790692589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31897390.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 12790692589 in words is "twelve billion, seven hundred ninety million, six hundred ninety-two thousand, five hundred eighty-nine".

Divisors: 1 401 31896989 12790692589