616182172321 has 2 divisors, whose sum is σ = 616182172322. Its totient is φ = 616182172320.

The previous prime is 616182172301. The next prime is 616182172327. The reversal of 616182172321 is 123271281616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 370229656225 + 245952516096 = 608465^2 + 495936^2 .

It is a cyclic number.

It is not a de Polignac number, because 616182172321 - 2⁵ = 616182172289 is a prime.

It is not a weakly prime, because it can be changed into another prime (616182172327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308091086160 + 308091086161.

It is an arithmetic number, because the mean of its divisors is an integer number (308091086161).

Almost surely, 2^616182172321 is an apocalyptic number.

It is an amenable number.

616182172321 is a deficient number, since it is larger than the sum of its proper divisors (1).

616182172321 is an equidigital number, since it uses as much as digits as its factorization.

616182172321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The spelling of 616182172321 in words is "six hundred sixteen billion, one hundred eighty-two million, one hundred seventy-two thousand, three hundred twenty-one".