1616367773617 has 2 divisors, whose sum is σ = 1616367773618. Its totient is φ = 1616367773616.

The previous prime is 1616367773609. The next prime is 1616367773621. The reversal of 1616367773617 is 7163777636161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1222154571121 + 394213202496 = 1105511^2 + 627864^2 .

It is a cyclic number.

It is not a de Polignac number, because 1616367773617 - 2³ = 1616367773609 is a prime.

It is a super-2 number, since 2×1616367773617² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1616367773677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808183886808 + 808183886809.

It is an arithmetic number, because the mean of its divisors is an integer number (808183886809).

Almost surely, 2^{1616367773617} is an apocalyptic number.

It is an amenable number.

1616367773617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616367773617 is an equidigital number, since it uses as much as digits as its factorization.

1616367773617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28005264, while the sum is 61.

The spelling of 1616367773617 in words is "one trillion, six hundred sixteen billion, three hundred sixty-seven million, seven hundred seventy-three thousand, six hundred seventeen".