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13907097791 = 72719129433
BaseRepresentation
bin11001111001110110…
…10111100010111111
31022220012122202200222
430330323113202333
5211440204112131
610215553211555
71001426244416
oct147473274277
938805582628
1013907097791
115997215454
122841560bbb
1314082b1c62
1495d01247d
15565dd187b
hex33ced78bf

13907097791 has 4 divisors (see below), whose sum is σ = 13926227952. Its totient is φ = 13887967632.

The previous prime is 13907097779. The next prime is 13907097811. The reversal of 13907097791 is 19779070931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19779070931 = 22738701747.

It is a cyclic number.

It is not a de Polignac number, because 13907097791 - 26 = 13907097727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13907097751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9563990 + ... + 9565443.

It is an arithmetic number, because the mean of its divisors is an integer number (3481556988).

Almost surely, 213907097791 is an apocalyptic number.

13907097791 is a deficient number, since it is larger than the sum of its proper divisors (19130161).

13907097791 is an equidigital number, since it uses as much as digits as its factorization.

13907097791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19130160.

The product of its (nonzero) digits is 750141, while the sum is 53.

The spelling of 13907097791 in words is "thirteen billion, nine hundred seven million, ninety-seven thousand, seven hundred ninety-one".

Divisors: 1 727 19129433 13907097791