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78286482813 = 3711338902523
BaseRepresentation
bin100100011101000111…
…1001110110101111101
321111001220211101022110
41020322033032311331
52240312314422223
655544143004233
75441004060450
oct1107217166575
9244056741273
1078286482813
1130223751280
1213209b99679
1374c8134b16
143b09375497
152082d49d93
hex123a3ced7d

78286482813 has 16 divisors (see below), whose sum is σ = 130138569216. Its totient is φ = 40668302640.

The previous prime is 78286482811. The next prime is 78286482881. The reversal of 78286482813 is 31828468287.

It is not a de Polignac number, because 78286482813 - 21 = 78286482811 is a prime.

It is a super-2 number, since 2×782864828132 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78286482811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169451031 + ... + 169451492.

It is an arithmetic number, because the mean of its divisors is an integer number (8133660576).

Almost surely, 278286482813 is an apocalyptic number.

It is an amenable number.

78286482813 is a deficient number, since it is larger than the sum of its proper divisors (51852086403).

78286482813 is a wasteful number, since it uses less digits than its factorization.

78286482813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338902544.

The product of its digits is 8257536, while the sum is 57.

The spelling of 78286482813 in words is "seventy-eight billion, two hundred eighty-six million, four hundred eighty-two thousand, eight hundred thirteen".

Divisors: 1 3 7 11 21 33 77 231 338902523 1016707569 2372317661 3727927753 7116952983 11183783259 26095494271 78286482813