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12783005083 = 45587280409
BaseRepresentation
bin10111110011110110…
…10010110110011011
31012222212110221101201
423321323102312123
5202134422130313
65512240055031
7631526515252
oct137173226633
935885427351
1012783005083
11546a744a12
122589004477
131289447044
14893a01799
154ec38c0dd
hex2f9ed2d9b

12783005083 has 4 divisors (see below), whose sum is σ = 12783331080. Its totient is φ = 12782679088.

The previous prime is 12783005023. The next prime is 12783005111. The reversal of 12783005083 is 38050038721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38050038721 = 151937250433.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12783005083 is a prime.

It is a super-3 number, since 3×127830050833 (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12783005023) 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, 94618 + ... + 185791.

It is an arithmetic number, because the mean of its divisors is an integer number (3195832770).

Almost surely, 212783005083 is an apocalyptic number.

12783005083 is a deficient number, since it is larger than the sum of its proper divisors (325997).

12783005083 is an equidigital number, since it uses as much as digits as its factorization.

12783005083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325996.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 12783005083 in words is "twelve billion, seven hundred eighty-three million, five thousand, eighty-three".

Divisors: 1 45587 280409 12783005083