2731520637641 has 2 divisors, whose sum is σ = 2731520637642. Its totient is φ = 2731520637640.

The previous prime is 2731520637563. The next prime is 2731520637701. The reversal of 2731520637641 is 1467360251372.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2713910286025 + 17610351616 = 1647395^2 + 132704^2 .

It is a cyclic number.

It is not a de Polignac number, because 2731520637641 - 2¹⁰ = 2731520636617 is a prime.

It is a super-2 number, since 2×2731520637641² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2731520636641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1365760318820 + 1365760318821.

It is an arithmetic number, because the mean of its divisors is an integer number (1365760318821).

Almost surely, 2^{2731520637641} is an apocalyptic number.

It is an amenable number.

2731520637641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2731520637641 is an equidigital number, since it uses as much as digits as its factorization.

2731520637641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 2731520637641 in words is "two trillion, seven hundred thirty-one billion, five hundred twenty million, six hundred thirty-seven thousand, six hundred forty-one".