611606665459 has 2 divisors, whose sum is σ = 611606665460. Its totient is φ = 611606665458.

The previous prime is 611606665433. The next prime is 611606665489. The reversal of 611606665459 is 954566606116.

It is a happy number.

611606665459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611606665459 - 2²¹ = 611604568307 is a prime.

It is not a weakly prime, because it can be changed into another prime (611606665489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305803332729 + 305803332730.

It is an arithmetic number, because the mean of its divisors is an integer number (305803332730).

Almost surely, 2^611606665459 is an apocalyptic number.

611606665459 is a deficient number, since it is larger than the sum of its proper divisors (1).

611606665459 is an equidigital number, since it uses as much as digits as its factorization.

611606665459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 611606665459 in words is "six hundred eleven billion, six hundred six million, six hundred sixty-five thousand, four hundred fifty-nine".