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13842655471 = 49128192781
BaseRepresentation
bin11001110010001011…
…00010100011101111
31022201201101202110101
430321011202203233
5211322204433341
610205332051531
71000014426061
oct147105424357
938651352411
1013842655471
1159638aaa37
122823a63ba7
1313c7b3acc8
14954639731
15560402831
hex3391628ef

13842655471 has 4 divisors (see below), whose sum is σ = 13870848744. Its totient is φ = 13814462200.

The previous prime is 13842655459. The next prime is 13842655483. The reversal of 13842655471 is 17455624831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17455624831 = 47371396273.

It is an interprime number because it is at equal distance from previous prime (13842655459) and next prime (13842655483).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13842655471 is a prime.

It is a super-3 number, since 3×138426554713 (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13842655571) 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, 14095900 + ... + 14096881.

It is an arithmetic number, because the mean of its divisors is an integer number (3467712186).

Almost surely, 213842655471 is an apocalyptic number.

13842655471 is a deficient number, since it is larger than the sum of its proper divisors (28193273).

13842655471 is an equidigital number, since it uses as much as digits as its factorization.

13842655471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28193272.

The product of its digits is 806400, while the sum is 46.

The spelling of 13842655471 in words is "thirteen billion, eight hundred forty-two million, six hundred fifty-five thousand, four hundred seventy-one".

Divisors: 1 491 28192781 13842655471