1611601615567 has 2 divisors, whose sum is σ = 1611601615568. Its totient is φ = 1611601615566.

The previous prime is 1611601615543. The next prime is 1611601615583. The reversal of 1611601615567 is 7655161061161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1611601615567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1611601615537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805800807783 + 805800807784.

It is an arithmetic number, because the mean of its divisors is an integer number (805800807784).

Almost surely, 2^{1611601615567} is an apocalyptic number.

1611601615567 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611601615567 is an equidigital number, since it uses as much as digits as its factorization.

1611601615567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 46.

The spelling of 1611601615567 in words is "one trillion, six hundred eleven billion, six hundred one million, six hundred fifteen thousand, five hundred sixty-seven".