61110499973 has 2 divisors, whose sum is σ = 61110499974. Its totient is φ = 61110499972.

The previous prime is 61110499969. The next prime is 61110499991. The reversal of 61110499973 is 37999401116.

It is a happy number.

61110499973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40448449924 + 20662050049 = 201118^2 + 143743^2 .

It is a cyclic number.

It is not a de Polignac number, because 61110499973 - 2² = 61110499969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61110499943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30555249986 + 30555249987.

It is an arithmetic number, because the mean of its divisors is an integer number (30555249987).

Almost surely, 2^61110499973 is an apocalyptic number.

It is an amenable number.

61110499973 is a deficient number, since it is larger than the sum of its proper divisors (1).

61110499973 is an equidigital number, since it uses as much as digits as its factorization.

61110499973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 50.

The spelling of 61110499973 in words is "sixty-one billion, one hundred ten million, four hundred ninety-nine thousand, nine hundred seventy-three".