61613205632827 has 2 divisors, whose sum is σ = 61613205632828. Its totient is φ = 61613205632826.

The previous prime is 61613205632791. The next prime is 61613205632879. The reversal of 61613205632827 is 72823650231616.

61613205632827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (61613205632879) can be obtained adding 61613205632827 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61613205632827 is a prime.

It is not a weakly prime, because it can be changed into another prime (61613205632897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30806602816413 + 30806602816414.

It is an arithmetic number, because the mean of its divisors is an integer number (30806602816414).

Almost surely, 2^{61613205632827} is an apocalyptic number.

61613205632827 is a deficient number, since it is larger than the sum of its proper divisors (1).

61613205632827 is an equidigital number, since it uses as much as digits as its factorization.

61613205632827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 61613205632827 in words is "sixty-one trillion, six hundred thirteen billion, two hundred five million, six hundred thirty-two thousand, eight hundred twenty-seven".