61365963019617 has 32 divisors (see below), whose sum is σ = 94865865768960. Its totient is φ = 39131667265680.

The previous prime is 61365963019609. The next prime is 61365963019643. The reversal of 61365963019617 is 71691036956316.

61365963019617 is a `hidden beast` number, since 6 + 1 + 3 + 6 + 5 + 9 + 6 + 3 + 0 + 1 + 9 + 617 = 666.

It is not a de Polignac number, because 61365963019617 - 2³ = 61365963019609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61365963019717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170676768 + ... + 171035934.

It is an arithmetic number, because the mean of its divisors is an integer number (2964558305280).

Almost surely, 2^{61365963019617} is an apocalyptic number.

It is an amenable number.

61365963019617 is a deficient number, since it is larger than the sum of its proper divisors (33499902749343).

61365963019617 is a wasteful number, since it uses less digits than its factorization.

61365963019617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634330 (or 634324 counting only the distinct ones).

The product of its (nonzero) digits is 33067440, while the sum is 63.

The spelling of 61365963019617 in words is "sixty-one trillion, three hundred sixty-five billion, nine hundred sixty-three million, nineteen thousand, six hundred seventeen".