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12907153789 = 41314808629
BaseRepresentation
bin11000000010101001…
…11000100101111101
31020022112002100101221
430001110320211331
5202413212410124
65532433033341
7634564665655
oct140124704575
936275070357
1012907153789
11552382a752
1226026b5851
1312a909440a
148a62bb365
15508211ce4
hex30153897d

12907153789 has 4 divisors (see below), whose sum is σ = 13221962460. Its totient is φ = 12592345120.

The previous prime is 12907153783. The next prime is 12907153807. The reversal of 12907153789 is 98735170921.

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 2163831289 + 10743322500 = 46517^2 + 103650^2 .

It is a cyclic number.

It is not a de Polignac number, because 12907153789 - 225 = 12873599357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12907153783) 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, 157404274 + ... + 157404355.

It is an arithmetic number, because the mean of its divisors is an integer number (3305490615).

Almost surely, 212907153789 is an apocalyptic number.

It is an amenable number.

12907153789 is a deficient number, since it is larger than the sum of its proper divisors (314808671).

12907153789 is an equidigital number, since it uses as much as digits as its factorization.

12907153789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314808670.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 12907153789 in words is "twelve billion, nine hundred seven million, one hundred fifty-three thousand, seven hundred eighty-nine".

Divisors: 1 41 314808629 12907153789