61345683089 has 2 divisors, whose sum is σ = 61345683090. Its totient is φ = 61345683088.

The previous prime is 61345683043. The next prime is 61345683143. The reversal of 61345683089 is 98038654316.

61345683089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53775291025 + 7570392064 = 231895^2 + 87008^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61345683089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61345683089.

It is not a weakly prime, because it can be changed into another prime (61345683019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30672841544 + 30672841545.

It is an arithmetic number, because the mean of its divisors is an integer number (30672841545).

Almost surely, 2^61345683089 is an apocalyptic number.

It is an amenable number.

61345683089 is a deficient number, since it is larger than the sum of its proper divisors (1).

61345683089 is an equidigital number, since it uses as much as digits as its factorization.

61345683089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 61345683089 in words is "sixty-one billion, three hundred forty-five million, six hundred eighty-three thousand, eighty-nine".