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12153541429 = 44927068021
BaseRepresentation
bin10110101000110100…
…00101001100110101
31011101000000212121001
423110122011030311
5144342301311204
65325552323301
7610114253251
oct132432051465
934330025531
1012153541429
1151773a2617
122432243531
1311b8c03643
14834189261
154b1e9e4a4
hex2d4685335

12153541429 has 4 divisors (see below), whose sum is σ = 12180609900. Its totient is φ = 12126472960.

The previous prime is 12153541423. The next prime is 12153541469. The reversal of 12153541429 is 92414535121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92414535121 = 352726202023.

It can be written as a sum of positive squares in 2 ways, for example, as 5093676900 + 7059864529 = 71370^2 + 84023^2 .

It is a cyclic number.

It is not a de Polignac number, because 12153541429 - 225 = 12119986997 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 (12153541423) 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, 13533562 + ... + 13534459.

It is an arithmetic number, because the mean of its divisors is an integer number (3045152475).

Almost surely, 212153541429 is an apocalyptic number.

It is an amenable number.

12153541429 is a deficient number, since it is larger than the sum of its proper divisors (27068471).

12153541429 is an equidigital number, since it uses as much as digits as its factorization.

12153541429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27068470.

The product of its digits is 43200, while the sum is 37.

The spelling of 12153541429 in words is "twelve billion, one hundred fifty-three million, five hundred forty-one thousand, four hundred twenty-nine".

Divisors: 1 449 27068021 12153541429