61118263 has 2 divisors, whose sum is σ = 61118264. Its totient is φ = 61118262.

The previous prime is 61118261. The next prime is 61118287. The reversal of 61118263 is 36281116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61118263 - 2¹ = 61118261 is a prime.

Together with 61118261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61118261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30559131 + 30559132.

It is an arithmetic number, because the mean of its divisors is an integer number (30559132).

Almost surely, 2^61118263 is an apocalyptic number.

61118263 is a deficient number, since it is larger than the sum of its proper divisors (1).

61118263 is an equidigital number, since it uses as much as digits as its factorization.

61118263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 61118263 is about 7817.8170226733. The cubic root of 61118263 is about 393.9039486028.

Adding to 61118263 its reverse (36281116), we get a palindrome (97399379).

The spelling of 61118263 in words is "sixty-one million, one hundred eighteen thousand, two hundred sixty-three".