61541406186 has 32 divisors (see below), whose sum is σ = 134040070080. Its totient is φ = 18723053184.

The previous prime is 61541406167. The next prime is 61541406211. The reversal of 61541406186 is 68160414516.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4425600 + ... + 4439483.

It is an arithmetic number, because the mean of its divisors is an integer number (4188752190).

Almost surely, 2^61541406186 is an apocalyptic number.

61541406186 is an abundant number, since it is smaller than the sum of its proper divisors (72498663894).

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

61541406186 is a wasteful number, since it uses less digits than its factorization.

61541406186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8865190.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 61541406186 in words is "sixty-one billion, five hundred forty-one million, four hundred six thousand, one hundred eighty-six".