616650001061 has 2 divisors, whose sum is σ = 616650001062. Its totient is φ = 616650001060.

The previous prime is 616650001021. The next prime is 616650001073. The reversal of 616650001061 is 160100056616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 597983610436 + 18666390625 = 773294^2 + 136625^2 .

It is a cyclic number.

It is not a de Polignac number, because 616650001061 - 2²² = 616645806757 is a prime.

It is a super-2 number, since 2×616650001061² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (616650001001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308325000530 + 308325000531.

It is an arithmetic number, because the mean of its divisors is an integer number (308325000531).

Almost surely, 2^616650001061 is an apocalyptic number.

It is an amenable number.

616650001061 is a deficient number, since it is larger than the sum of its proper divisors (1).

616650001061 is an equidigital number, since it uses as much as digits as its factorization.

616650001061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

Adding to 616650001061 its reverse (160100056616), we get a palindrome (776750057677).

The spelling of 616650001061 in words is "six hundred sixteen billion, six hundred fifty million, one thousand, sixty-one".