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13620806485 = 5111337514867
BaseRepresentation
bin11001010111101110…
…10000001101010101
31022011020221122212021
430223313100031111
5210343411301420
610131325053141
7661351642036
oct145367201525
938136848767
1013620806485
11585a654570
1227816b71b1
131390ba3b10
14932daaa8d
1554abce7aa
hex32bdd0355

13620806485 has 32 divisors (see below), whose sum is σ = 19721503872. Its totient is φ = 8896884480.

The previous prime is 13620806483. The next prime is 13620806491. The reversal of 13620806485 is 58460802631.

It is not a de Polignac number, because 13620806485 - 21 = 13620806483 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 (13620806483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 230979 + ... + 283888.

It is an arithmetic number, because the mean of its divisors is an integer number (616296996).

Almost surely, 213620806485 is an apocalyptic number.

It is an amenable number.

13620806485 is a deficient number, since it is larger than the sum of its proper divisors (6100697387).

13620806485 is a wasteful number, since it uses less digits than its factorization.

13620806485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514933.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 13620806485 in words is "thirteen billion, six hundred twenty million, eight hundred six thousand, four hundred eighty-five".

Divisors: 1 5 11 13 37 55 65 143 185 407 481 715 2035 2405 5291 26455 514867 2574335 5663537 6693271 19050079 28317685 33466355 73625981 95250395 209550869 247651027 368129905 1047754345 1238255135 2724161297 13620806485