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13379426387 = 50812633227
BaseRepresentation
bin11000111010111100…
…11101100001010011
31021112102202021121122
430131132131201103
5204400113121022
610051343312455
7652361151005
oct143536354123
937472667548
1013379426387
115746379088
1227148ab72b
131352b8ba62
1490ccd6375
155348ee742
hex31d79d853

13379426387 has 4 divisors (see below), whose sum is σ = 13382064696. Its totient is φ = 13376788080.

The previous prime is 13379426383. The next prime is 13379426413. The reversal of 13379426387 is 78362497331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78362497331 = 269291310399.

It is a cyclic number.

It is not a de Polignac number, because 13379426387 - 22 = 13379426383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13379426381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1311533 + ... + 1321694.

It is an arithmetic number, because the mean of its divisors is an integer number (3345516174).

Almost surely, 213379426387 is an apocalyptic number.

13379426387 is a deficient number, since it is larger than the sum of its proper divisors (2638309).

13379426387 is an equidigital number, since it uses as much as digits as its factorization.

13379426387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638308.

The product of its digits is 4572288, while the sum is 53.

The spelling of 13379426387 in words is "thirteen billion, three hundred seventy-nine million, four hundred twenty-six thousand, three hundred eighty-seven".

Divisors: 1 5081 2633227 13379426387