61329055194 has 48 divisors (see below), whose sum is σ = 153486627840. Its totient is φ = 17491351680.

The previous prime is 61329055187. The next prime is 61329055219. The reversal of 61329055194 is 49155092316.

61329055194 is a `hidden beast` number, since 6 + 1 + 3 + 2 + 9 + 0 + 551 + 94 = 666.

It is a super-2 number, since 2×61329055194² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9106714 + ... + 9113445.

It is an arithmetic number, because the mean of its divisors is an integer number (3197638080).

Almost surely, 2^61329055194 is an apocalyptic number.

61329055194 is an abundant number, since it is smaller than the sum of its proper divisors (92157572646).

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

61329055194 is a wasteful number, since it uses less digits than its factorization.

61329055194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18220195 (or 18220192 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 61329055194 in words is "sixty-one billion, three hundred twenty-nine million, fifty-five thousand, one hundred ninety-four".