61193356849 has 8 divisors (see below), whose sum is σ = 61267417920. Its totient is φ = 61119332016.

The previous prime is 61193356841. The next prime is 61193356897. The reversal of 61193356849 is 94865339116.

61193356849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61193356849 - 2³ = 61193356841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61193356849.

It is not an unprimeable number, because it can be changed into a prime (61193356841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4832244 + ... + 4844890.

It is an arithmetic number, because the mean of its divisors is an integer number (7658427240).

Almost surely, 2^61193356849 is an apocalyptic number.

It is an amenable number.

61193356849 is a deficient number, since it is larger than the sum of its proper divisors (74061071).

61193356849 is a wasteful number, since it uses less digits than its factorization.

61193356849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18119.

The product of its digits is 4199040, while the sum is 55.

The spelling of 61193356849 in words is "sixty-one billion, one hundred ninety-three million, three hundred fifty-six thousand, eight hundred forty-nine".