2989721537723 has 2 divisors, whose sum is σ = 2989721537724. Its totient is φ = 2989721537722.

The previous prime is 2989721537669. The next prime is 2989721537729. The reversal of 2989721537723 is 3277351279892.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2989721537723 - 2³⁰ = 2988647795899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2989721537723.

It is not a weakly prime, because it can be changed into another prime (2989721537729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1494860768861 + 1494860768862.

It is an arithmetic number, because the mean of its divisors is an integer number (1494860768862).

Almost surely, 2^{2989721537723} is an apocalyptic number.

2989721537723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2989721537723 is an equidigital number, since it uses as much as digits as its factorization.

2989721537723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80015040, while the sum is 65.

The spelling of 2989721537723 in words is "two trillion, nine hundred eighty-nine billion, seven hundred twenty-one million, five hundred thirty-seven thousand, seven hundred twenty-three".