Search a number
-
+
12580314245 = 5172337972
BaseRepresentation
bin10111011011101100…
…00101110010000101
31012110202002011211122
423231312011302011
5201231030023440
65440155443325
7623515623002
oct135566056205
935422064748
1012580314245
115376294324
122531156545
13125645a035
14874b1c8a9
154d96a07b5
hex2edd85c85

12580314245 has 24 divisors (see below), whose sum is σ = 16073168904. Its totient is φ = 9419749376.

The previous prime is 12580314203. The next prime is 12580314247. The reversal of 12580314245 is 54241308521.

It is a Cunningham number, because it is equal to 1121622+1.

It can be written as a sum of positive squares in 12 ways, for example, as 2786045089 + 9794269156 = 52783^2 + 98966^2 .

It is not a de Polignac number, because 12580314245 - 226 = 12513205381 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 (12580314247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15784187 + ... + 15784983.

It is an arithmetic number, because the mean of its divisors is an integer number (669715371).

Almost surely, 212580314245 is an apocalyptic number.

It is an amenable number.

12580314245 is a deficient number, since it is larger than the sum of its proper divisors (3492854659).

12580314245 is an frugal number, since it uses more digits than its factorization.

12580314245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849 (or 1052 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 12580314245 in words is "twelve billion, five hundred eighty million, three hundred fourteen thousand, two hundred forty-five".

Divisors: 1 5 17 85 233 797 1165 3961 3985 13549 19805 67745 185701 635209 928505 3156917 3176045 10798553 15784585 53992765 148003697 740018485 2516062849 12580314245