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13102501345 = 52620500269
BaseRepresentation
bin11000011001111100…
…00100110111100001
31020211010200000212121
430030332010313201
5203313220020340
610004052024241
7642456265243
oct141476046741
936733600777
1013102501345
11561402520a
122658002081
13130a6acb9b
148c420c093
1551a44c94a
hex30cf84de1

13102501345 has 4 divisors (see below), whose sum is σ = 15723001620. Its totient is φ = 10482001072.

The previous prime is 13102501343. The next prime is 13102501361. The reversal of 13102501345 is 54310520131.

It is a happy number.

13102501345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54310520131 = 77758645733.

It can be written as a sum of positive squares in 2 ways, for example, as 2589690321 + 10512811024 = 50889^2 + 102532^2 .

It is a cyclic number.

It is not a de Polignac number, because 13102501345 - 21 = 13102501343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13102501343) 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 3 ways as a sum of consecutive naturals, for example, 1310250130 + ... + 1310250139.

It is an arithmetic number, because the mean of its divisors is an integer number (3930750405).

Almost surely, 213102501345 is an apocalyptic number.

It is an amenable number.

13102501345 is a deficient number, since it is larger than the sum of its proper divisors (2620500275).

13102501345 is an equidigital number, since it uses as much as digits as its factorization.

13102501345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620500274.

The product of its (nonzero) digits is 1800, while the sum is 25.

The spelling of 13102501345 in words is "thirteen billion, one hundred two million, five hundred one thousand, three hundred forty-five".

Divisors: 1 5 2620500269 13102501345