611246045021 has 2 divisors, whose sum is σ = 611246045022. Its totient is φ = 611246045020.

The previous prime is 611246044991. The next prime is 611246045051. The reversal of 611246045021 is 120540642116.

It is a balanced prime because it is at equal distance from previous prime (611246044991) and next prime (611246045051).

It can be written as a sum of positive squares in only one way, i.e., 369463387225 + 241782657796 = 607835^2 + 491714^2 .

It is a cyclic number.

It is not a de Polignac number, because 611246045021 - 2¹⁸ = 611245782877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611246045051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305623022510 + 305623022511.

It is an arithmetic number, because the mean of its divisors is an integer number (305623022511).

Almost surely, 2^611246045021 is an apocalyptic number.

It is an amenable number.

611246045021 is a deficient number, since it is larger than the sum of its proper divisors (1).

611246045021 is an equidigital number, since it uses as much as digits as its factorization.

611246045021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 611246045021 its reverse (120540642116), we get a palindrome (731786687137).

The spelling of 611246045021 in words is "six hundred eleven billion, two hundred forty-six million, forty-five thousand, twenty-one".