61110499969 has 2 divisors, whose sum is σ = 61110499970. Its totient is φ = 61110499968.

The previous prime is 61110499943. The next prime is 61110499973. The reversal of 61110499969 is 96999401116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59578951744 + 1531548225 = 244088^2 + 39135^2 .

It is a cyclic number.

It is not a de Polignac number, because 61110499969 - 2⁵ = 61110499937 is a prime.

It is a super-2 number, since 2×61110499969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61110499169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30555249984 + 30555249985.

It is an arithmetic number, because the mean of its divisors is an integer number (30555249985).

Almost surely, 2^61110499969 is an apocalyptic number.

It is an amenable number.

61110499969 is a deficient number, since it is larger than the sum of its proper divisors (1).

61110499969 is an equidigital number, since it uses as much as digits as its factorization.

61110499969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 944784, while the sum is 55.

The spelling of 61110499969 in words is "sixty-one billion, one hundred ten million, four hundred ninety-nine thousand, nine hundred sixty-nine".