61969694833 has 2 divisors, whose sum is σ = 61969694834. Its totient is φ = 61969694832.

The previous prime is 61969694789. The next prime is 61969694837. The reversal of 61969694833 is 33849696916.

61969694833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51852754944 + 10116939889 = 227712^2 + 100583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61969694833 is a prime.

It is not a weakly prime, because it can be changed into another prime (61969694837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30984847416 + 30984847417.

It is an arithmetic number, because the mean of its divisors is an integer number (30984847417).

Almost surely, 2^61969694833 is an apocalyptic number.

It is an amenable number.

61969694833 is a deficient number, since it is larger than the sum of its proper divisors (1).

61969694833 is an equidigital number, since it uses as much as digits as its factorization.

61969694833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45349632, while the sum is 64.

The spelling of 61969694833 in words is "sixty-one billion, nine hundred sixty-nine million, six hundred ninety-four thousand, eight hundred thirty-three".