61217000071 has 2 divisors, whose sum is σ = 61217000072. Its totient is φ = 61217000070.

The previous prime is 61217000069. The next prime is 61217000101. The reversal of 61217000071 is 17000071216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61217000071 - 2¹ = 61217000069 is a prime.

Together with 61217000069, it forms a pair of twin primes.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30608500035 + 30608500036.

It is an arithmetic number, because the mean of its divisors is an integer number (30608500036).

Almost surely, 2^61217000071 is an apocalyptic number.

61217000071 is a deficient number, since it is larger than the sum of its proper divisors (1).

61217000071 is an equidigital number, since it uses as much as digits as its factorization.

61217000071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 25.

Adding to 61217000071 its reverse (17000071216), we get a palindrome (78217071287).

The spelling of 61217000071 in words is "sixty-one billion, two hundred seventeen million, seventy-one", and thus it is an aban number.