61384193208 has 192 divisors, whose sum is σ = 184303042560. Its totient is φ = 18338358528.

The previous prime is 61384193201. The next prime is 61384193267. The reversal of 61384193208 is 80239148316.

61384193208 is a `hidden beast` number, since 61 + 384 + 1 + 9 + 3 + 208 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61384193201) 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 47 ways as a sum of consecutive naturals, for example, 5581491 + ... + 5592477.

It is an arithmetic number, because the mean of its divisors is an integer number (959911680).

Almost surely, 2^61384193208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61384193208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92151521280).

61384193208 is an abundant number, since it is smaller than the sum of its proper divisors (122918849352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61384193208 is a wasteful number, since it uses less digits than its factorization.

61384193208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11186 (or 11179 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 61384193208 in words is "sixty-one billion, three hundred eighty-four million, one hundred ninety-three thousand, two hundred eight".