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13012999986 = 237309833333
BaseRepresentation
bin11000001111010001…
…01001111100110010
31020120220020220002110
430013220221330302
5203122311444421
65551133430150
7640321450320
oct140750517462
936526226073
1013012999986
115578554548
12263203b356
1312c4ca3bbc
148b6390d10
1551266da76
hex307a29f32

13012999986 has 16 divisors (see below), whose sum is σ = 29744000064. Its totient is φ = 3717999984.

The previous prime is 13012999981. The next prime is 13012999997. The reversal of 13012999986 is 68999921031.

13012999986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13012999981) 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 7 ways as a sum of consecutive naturals, for example, 154916625 + ... + 154916708.

It is an arithmetic number, because the mean of its divisors is an integer number (1859000004).

Almost surely, 213012999986 is an apocalyptic number.

13012999986 is an abundant number, since it is smaller than the sum of its proper divisors (16731000078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13012999986 is a wasteful number, since it uses less digits than its factorization.

13012999986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309833345.

The product of its (nonzero) digits is 1889568, while the sum is 57.

The spelling of 13012999986 in words is "thirteen billion, twelve million, nine hundred ninety-nine thousand, nine hundred eighty-six".

Divisors: 1 2 3 6 7 14 21 42 309833333 619666666 929499999 1858999998 2168833331 4337666662 6506499993 13012999986