61017668704289 has 16 divisors (see below), whose sum is σ = 68862781967616. Its totient is φ = 53577450403200.

The previous prime is 61017668704261. The next prime is 61017668704313. The reversal of 61017668704289 is 98240786671016.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61017668704289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61017668704249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547099577 + ... + 547211094.

It is an arithmetic number, because the mean of its divisors is an integer number (4303923872976).

Almost surely, 2^{61017668704289} is an apocalyptic number.

It is an amenable number.

61017668704289 is a deficient number, since it is larger than the sum of its proper divisors (7845113263327).

61017668704289 is a wasteful number, since it uses less digits than its factorization.

61017668704289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094310856.

The product of its (nonzero) digits is 48771072, while the sum is 65.

The spelling of 61017668704289 in words is "sixty-one trillion, seventeen billion, six hundred sixty-eight million, seven hundred four thousand, two hundred eighty-nine".