61945351433 has 16 divisors (see below), whose sum is σ = 73110844416. Its totient is φ = 51360419520.

The previous prime is 61945351357. The next prime is 61945351439. The reversal of 61945351433 is 33415354916.

It is a cyclic number.

It is not a de Polignac number, because 61945351433 - 2⁸ = 61945351177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61945351439) 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 in 15 ways as a sum of consecutive naturals, for example, 435335 + ... + 559827.

It is an arithmetic number, because the mean of its divisors is an integer number (4569427776).

Almost surely, 2^61945351433 is an apocalyptic number.

It is an amenable number.

61945351433 is a deficient number, since it is larger than the sum of its proper divisors (11165492983).

61945351433 is a wasteful number, since it uses less digits than its factorization.

61945351433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126824.

The product of its digits is 583200, while the sum is 44.

The spelling of 61945351433 in words is "sixty-one billion, nine hundred forty-five million, three hundred fifty-one thousand, four hundred thirty-three".