61394432833 has 2 divisors, whose sum is σ = 61394432834. Its totient is φ = 61394432832.

The previous prime is 61394432821. The next prime is 61394432857. The reversal of 61394432833 is 33823449316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61171139584 + 223293249 = 247328^2 + 14943^2 .

It is a cyclic number.

It is not a de Polignac number, because 61394432833 - 2⁹ = 61394432321 is a prime.

It is not a weakly prime, because it can be changed into another prime (61394432633) 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, 30697216416 + 30697216417.

It is an arithmetic number, because the mean of its divisors is an integer number (30697216417).

Almost surely, 2^61394432833 is an apocalyptic number.

It is an amenable number.

61394432833 is a deficient number, since it is larger than the sum of its proper divisors (1).

61394432833 is an equidigital number, since it uses as much as digits as its factorization.

61394432833 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 46.

The spelling of 61394432833 in words is "sixty-one billion, three hundred ninety-four million, four hundred thirty-two thousand, eight hundred thirty-three".