1054338730721 has 2 divisors, whose sum is σ = 1054338730722. Its totient is φ = 1054338730720.

The previous prime is 1054338730681. The next prime is 1054338730723. The reversal of 1054338730721 is 1270378334501.

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., 1037625412321 + 16713318400 = 1018639^2 + 129280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1054338730721 - 2¹⁸ = 1054338468577 is a prime.

It is a super-2 number, since 2×1054338730721² (a number of 25 digits) contains 22 as substring.

Together with 1054338730723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1054338730723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527169365360 + 527169365361.

It is an arithmetic number, because the mean of its divisors is an integer number (527169365361).

Almost surely, 2^{1054338730721} is an apocalyptic number.

It is an amenable number.

1054338730721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1054338730721 is an equidigital number, since it uses as much as digits as its factorization.

1054338730721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 1054338730721 in words is "one trillion, fifty-four billion, three hundred thirty-eight million, seven hundred thirty thousand, seven hundred twenty-one".