61100555513 has 2 divisors, whose sum is σ = 61100555514. Its totient is φ = 61100555512.

The previous prime is 61100555489. The next prime is 61100555533. The reversal of 61100555513 is 31555500116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33168787129 + 27931768384 = 182123^2 + 167128^2 .

It is a cyclic number.

It is not a de Polignac number, because 61100555513 - 2⁶ = 61100555449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 61100555513.

It is not a weakly prime, because it can be changed into another prime (61100555533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30550277756 + 30550277757.

It is an arithmetic number, because the mean of its divisors is an integer number (30550277757).

Almost surely, 2^61100555513 is an apocalyptic number.

It is an amenable number.

61100555513 is a deficient number, since it is larger than the sum of its proper divisors (1).

61100555513 is an equidigital number, since it uses as much as digits as its factorization.

61100555513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11250, while the sum is 32.

The spelling of 61100555513 in words is "sixty-one billion, one hundred million, five hundred fifty-five thousand, five hundred thirteen".