61878168366293 has 8 divisors (see below), whose sum is σ = 62110131279648. Its totient is φ = 61646267151504.

The previous prime is 61878168366247. The next prime is 61878168366299. The reversal of 61878168366293 is 39266386187816.

It is a happy number.

61878168366293 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 61878168366293 - 2¹⁰ = 61878168365269 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 61878168366293.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61878168366299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13414571 + ... + 17427192.

It is an arithmetic number, because the mean of its divisors is an integer number (7763766409956).

Almost surely, 2^{61878168366293} is an apocalyptic number.

It is an amenable number.

61878168366293 is a deficient number, since it is larger than the sum of its proper divisors (231962913355).

61878168366293 is a wasteful number, since it uses less digits than its factorization.

61878168366293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30849283.

The product of its digits is 752467968, while the sum is 74.

The spelling of 61878168366293 in words is "sixty-one trillion, eight hundred seventy-eight billion, one hundred sixty-eight million, three hundred sixty-six thousand, two hundred ninety-three".