2749665543 has 4 divisors (see below), whose sum is σ = 3666220728. Its totient is φ = 1833110360.

The previous prime is 2749665481. The next prime is 2749665551. The reversal of 2749665543 is 3455669472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2749665543 - 2¹⁴ = 2749649159 is a prime.

It is a super-2 number, since 2×2749665543² = 15121321196722969698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749665043) 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, 458277588 + ... + 458277593.

It is an arithmetic number, because the mean of its divisors is an integer number (916555182).

Almost surely, 2^2749665543 is an apocalyptic number.

2749665543 is a deficient number, since it is larger than the sum of its proper divisors (916555185).

2749665543 is an equidigital number, since it uses as much as digits as its factorization.

2749665543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916555184.

The product of its digits is 5443200, while the sum is 51.

The square root of 2749665543 is about 52437.2533891698. The cubic root of 2749665543 is about 1400.9628653481.

It can be divided in two parts, 27496 and 65543, that added together give a palindrome (93039).

The spelling of 2749665543 in words is "two billion, seven hundred forty-nine million, six hundred sixty-five thousand, five hundred forty-three".