61263033109 has 2 divisors, whose sum is σ = 61263033110. Its totient is φ = 61263033108.

The previous prime is 61263033023. The next prime is 61263033121. The reversal of 61263033109 is 90133036216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33900910884 + 27362122225 = 184122^2 + 165415^2 .

It is a cyclic number.

It is not a de Polignac number, because 61263033109 - 2¹¹ = 61263031061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61263033199) 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, 30631516554 + 30631516555.

It is an arithmetic number, because the mean of its divisors is an integer number (30631516555).

Almost surely, 2^61263033109 is an apocalyptic number.

It is an amenable number.

61263033109 is a deficient number, since it is larger than the sum of its proper divisors (1).

61263033109 is an equidigital number, since it uses as much as digits as its factorization.

61263033109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The spelling of 61263033109 in words is "sixty-one billion, two hundred sixty-three million, thirty-three thousand, one hundred nine".