61055551033 has 2 divisors, whose sum is σ = 61055551034. Its totient is φ = 61055551032.

The previous prime is 61055551009. The next prime is 61055551129. The reversal of 61055551033 is 33015555016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58841660329 + 2213890704 = 242573^2 + 47052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61055551033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61055551033.

It is not a weakly prime, because it can be changed into another prime (61055551133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30527775516 + 30527775517.

It is an arithmetic number, because the mean of its divisors is an integer number (30527775517).

Almost surely, 2^61055551033 is an apocalyptic number.

It is an amenable number.

61055551033 is a deficient number, since it is larger than the sum of its proper divisors (1).

61055551033 is an equidigital number, since it uses as much as digits as its factorization.

61055551033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33750, while the sum is 34.

The spelling of 61055551033 in words is "sixty-one billion, fifty-five million, five hundred fifty-one thousand, thirty-three".