61776300049 has 2 divisors, whose sum is σ = 61776300050. Its totient is φ = 61776300048.

The previous prime is 61776300023. The next prime is 61776300067. The reversal of 61776300049 is 94000367716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56957163649 + 4819136400 = 238657^2 + 69420^2 .

It is a cyclic number.

It is not a de Polignac number, because 61776300049 - 2⁹ = 61776299537 is a prime.

It is a super-2 number, since 2×61776300049² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61776299978 and 61776300014.

It is not a weakly prime, because it can be changed into another prime (61776300449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30888150024 + 30888150025.

It is an arithmetic number, because the mean of its divisors is an integer number (30888150025).

Almost surely, 2^61776300049 is an apocalyptic number.

It is an amenable number.

61776300049 is a deficient number, since it is larger than the sum of its proper divisors (1).

61776300049 is an equidigital number, since it uses as much as digits as its factorization.

61776300049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 61776300049 in words is "sixty-one billion, seven hundred seventy-six million, three hundred thousand, forty-nine".