1616288697601 has 2 divisors, whose sum is σ = 1616288697602. Its totient is φ = 1616288697600.

The previous prime is 1616288697593. The next prime is 1616288697607. The reversal of 1616288697601 is 1067968826161.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1615606234225 + 682463376 = 1271065^2 + 26124^2 .

It is an emirp because it is prime and its reverse (1067968826161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1616288697601 - 2³ = 1616288697593 is a prime.

It is a super-2 number, since 2×1616288697601² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1616288697601.

It is not a weakly prime, because it can be changed into another prime (1616288697607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808144348800 + 808144348801.

It is an arithmetic number, because the mean of its divisors is an integer number (808144348801).

Almost surely, 2^{1616288697601} is an apocalyptic number.

It is an amenable number.

1616288697601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616288697601 is an equidigital number, since it uses as much as digits as its factorization.

1616288697601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10450944, while the sum is 61.

The spelling of 1616288697601 in words is "one trillion, six hundred sixteen billion, two hundred eighty-eight million, six hundred ninety-seven thousand, six hundred one".