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12160062557 = 67181493471
BaseRepresentation
bin10110101001100101…
…11101010001011101
31011101110022011220022
423110302331101131
5144400434000212
65330344201525
7610223553266
oct132462752135
934343264808
1012160062557
115180046a85
1224344692a5
1311ba3778b6
14834da596d
154b283b772
hex2d4cbd45d

12160062557 has 4 divisors (see below), whose sum is σ = 12341556096. Its totient is φ = 11978569020.

The previous prime is 12160062503. The next prime is 12160062569. The reversal of 12160062557 is 75526006121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75526006121 = 431756418747.

It is a cyclic number.

It is not a de Polignac number, because 12160062557 - 212 = 12160058461 is a prime.

It is a super-3 number, since 3×121600625573 (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12160062857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90746669 + ... + 90746802.

It is an arithmetic number, because the mean of its divisors is an integer number (3085389024).

Almost surely, 212160062557 is an apocalyptic number.

It is an amenable number.

12160062557 is a deficient number, since it is larger than the sum of its proper divisors (181493539).

12160062557 is an equidigital number, since it uses as much as digits as its factorization.

12160062557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181493538.

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 12160062557 its reverse (75526006121), we get a palindrome (87686068678).

The spelling of 12160062557 in words is "twelve billion, one hundred sixty million, sixty-two thousand, five hundred fifty-seven".

Divisors: 1 67 181493471 12160062557