611606215567 has 2 divisors, whose sum is σ = 611606215568. Its totient is φ = 611606215566.

The previous prime is 611606215531. The next prime is 611606215579. The reversal of 611606215567 is 765512606116.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611606215567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611606215667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305803107783 + 305803107784.

It is an arithmetic number, because the mean of its divisors is an integer number (305803107784).

Almost surely, 2^611606215567 is an apocalyptic number.

611606215567 is a deficient number, since it is larger than the sum of its proper divisors (1).

611606215567 is an equidigital number, since it uses as much as digits as its factorization.

611606215567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 611606215567 in words is "six hundred eleven billion, six hundred six million, two hundred fifteen thousand, five hundred sixty-seven".