721452540532511 has 2 divisors, whose sum is σ = 721452540532512. Its totient is φ = 721452540532510.

The previous prime is 721452540532499. The next prime is 721452540532531. The reversal of 721452540532511 is 115235045254127.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-721452540532511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (721452540532531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360726270266255 + 360726270266256.

It is an arithmetic number, because the mean of its divisors is an integer number (360726270266256).

Almost surely, 2^{721452540532511} is an apocalyptic number.

721452540532511 is a deficient number, since it is larger than the sum of its proper divisors (1).

721452540532511 is an equidigital number, since it uses as much as digits as its factorization.

721452540532511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680000, while the sum is 47.

Adding to 721452540532511 its reverse (115235045254127), we get a palindrome (836687585786638).

The spelling of 721452540532511 in words is "seven hundred twenty-one trillion, four hundred fifty-two billion, five hundred forty million, five hundred thirty-two thousand, five hundred eleven".