61612817318683 has 2 divisors, whose sum is σ = 61612817318684. Its totient is φ = 61612817318682.

The previous prime is 61612817318681. The next prime is 61612817318699. The reversal of 61612817318683 is 38681371821616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61612817318683 - 2¹ = 61612817318681 is a prime.

It is a super-2 number, since 2×61612817318683² (a number of 28 digits) contains 22 as substring.

Together with 61612817318681, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61612817318681) 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, 30806408659341 + 30806408659342.

It is an arithmetic number, because the mean of its divisors is an integer number (30806408659342).

Almost surely, 2^{61612817318683} is an apocalyptic number.

61612817318683 is a deficient number, since it is larger than the sum of its proper divisors (1).

61612817318683 is an equidigital number, since it uses as much as digits as its factorization.

61612817318683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13934592, while the sum is 61.

The spelling of 61612817318683 in words is "sixty-one trillion, six hundred twelve billion, eight hundred seventeen million, three hundred eighteen thousand, six hundred eighty-three".