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13012618444801 = 89146209196009
BaseRepresentation
bin1011110101011011110010…
…0000000000000000000001
31201001222211202022221101221
42331112330200000000001
53201144320310213201
643401525301355041
72512062546535243
oct275267440000001
951058752287357
1013012618444801
114167690968078
121561b23708a81
13735113ca60c1
1432db57c2c093
1517874c36a4a1
hexbd5bc800001

13012618444801 has 4 divisors (see below), whose sum is σ = 13158827640900. Its totient is φ = 12866409248704.

The previous prime is 13012618444717. The next prime is 13012618444807. The reversal of 13012618444801 is 10844481621031.

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 3780500811201 + 9232117633600 = 1944351^2 + 3038440^2 .

It is a cyclic number.

It is not a de Polignac number, because 13012618444801 - 227 = 13012484227073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13012618444807) 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, 73104597916 + ... + 73104598093.

It is an arithmetic number, because the mean of its divisors is an integer number (3289706910225).

It is a Proth number, since it is equal to 1551225 ⋅ 223 + 1 and 1551225 < 223.

Almost surely, 213012618444801 is an apocalyptic number.

It is an amenable number.

13012618444801 is a deficient number, since it is larger than the sum of its proper divisors (146209196099).

13012618444801 is an equidigital number, since it uses as much as digits as its factorization.

13012618444801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146209196098.

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 13012618444801 in words is "thirteen trillion, twelve billion, six hundred eighteen million, four hundred forty-four thousand, eight hundred one".

Divisors: 1 89 146209196009 13012618444801