Search a number
-
+
12507762813 = 371345815981
BaseRepresentation
bin10111010011000010…
…10101000001111101
31012021200120011222120
423221201111001331
5201103441402223
65425044433153
7621645141540
oct135141250175
935250504876
1012507762813
115339340367
1225109a87b9
1312444070b0
14869234857
154d311dbe3
hex2e985507d

12507762813 has 16 divisors (see below), whose sum is σ = 20525559936. Its totient is φ = 6597501120.

The previous prime is 12507762797. The next prime is 12507762853. The reversal of 12507762813 is 31826770521.

12507762813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12507762813 - 24 = 12507762797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507762853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22907718 + ... + 22908263.

It is an arithmetic number, because the mean of its divisors is an integer number (1282847496).

Almost surely, 212507762813 is an apocalyptic number.

12507762813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12507762813 is a deficient number, since it is larger than the sum of its proper divisors (8017797123).

12507762813 is a wasteful number, since it uses less digits than its factorization.

12507762813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45816004.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 12507762813 in words is "twelve billion, five hundred seven million, seven hundred sixty-two thousand, eight hundred thirteen".

Divisors: 1 3 7 13 21 39 91 273 45815981 137447943 320711867 595607753 962135601 1786823259 4169254271 12507762813