611221617084797 has 2 divisors, whose sum is σ = 611221617084798. Its totient is φ = 611221617084796.

The previous prime is 611221617084791. The next prime is 611221617084811. The reversal of 611221617084797 is 797480716122116.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 578942981602756 + 32278635482041 = 24061234^2 + 5681429^2 .

It is a cyclic number.

It is not a de Polignac number, because 611221617084797 - 2⁶ = 611221617084733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611221617084791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305610808542398 + 305610808542399.

It is an arithmetic number, because the mean of its divisors is an integer number (305610808542399).

Almost surely, 2^{611221617084797} is an apocalyptic number.

It is an amenable number.

611221617084797 is a deficient number, since it is larger than the sum of its proper divisors (1).

611221617084797 is an equidigital number, since it uses as much as digits as its factorization.

611221617084797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14224896, while the sum is 62.

The spelling of 611221617084797 in words is "six hundred eleven trillion, two hundred twenty-one billion, six hundred seventeen million, eighty-four thousand, seven hundred ninety-seven".