2749462549621 has 2 divisors, whose sum is σ = 2749462549622. Its totient is φ = 2749462549620.

The previous prime is 2749462549619. The next prime is 2749462549633. The reversal of 2749462549621 is 1269452649472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1753079273521 + 996383276100 = 1324039^2 + 998190^2 .

It is a cyclic number.

It is not a de Polignac number, because 2749462549621 - 2¹ = 2749462549619 is a prime.

Together with 2749462549619, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2749462549621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2749462549321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1374731274810 + 1374731274811.

It is an arithmetic number, because the mean of its divisors is an integer number (1374731274811).

Almost surely, 2^{2749462549621} is an apocalyptic number.

It is an amenable number.

2749462549621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2749462549621 is an equidigital number, since it uses as much as digits as its factorization.

2749462549621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52254720, while the sum is 61.

The spelling of 2749462549621 in words is "two trillion, seven hundred forty-nine billion, four hundred sixty-two million, five hundred forty-nine thousand, six hundred twenty-one".