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13379739805 = 54779720697
BaseRepresentation
bin11000111010111111…
…01010000010011101
31021112110100012112201
430131133222002131
5204400203133210
610051354131501
7652363624525
oct143537520235
937473305481
1013379739805
115746572603
122714a20b91
131352c6b603
1490cd78685
1553496253a
hex31d7ea09d

13379739805 has 16 divisors (see below), whose sum is σ = 16604881920. Its totient is φ = 10343428992.

The previous prime is 13379739761. The next prime is 13379739851. The reversal of 13379739805 is 50893797331.

It is a cyclic number.

It is not a de Polignac number, because 13379739805 - 211 = 13379737757 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 341784 + ... + 378913.

It is an arithmetic number, because the mean of its divisors is an integer number (1037805120).

Almost surely, 213379739805 is an apocalyptic number.

It is an amenable number.

13379739805 is a deficient number, since it is larger than the sum of its proper divisors (3225142115).

13379739805 is an equidigital number, since it uses as much as digits as its factorization.

13379739805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720828.

The product of its (nonzero) digits is 4286520, while the sum is 55.

The spelling of 13379739805 in words is "thirteen billion, three hundred seventy-nine million, seven hundred thirty-nine thousand, eight hundred five".

Divisors: 1 5 47 79 235 395 3713 18565 720697 3603485 33872759 56935063 169363795 284675315 2675947961 13379739805