61181069406 has 8 divisors (see below), whose sum is σ = 122362138824. Its totient is φ = 20393689800.

The previous prime is 61181069371. The next prime is 61181069419. The reversal of 61181069406 is 60496018116.

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

61181069406 is an admirable number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 5098422445 + ... + 5098422456.

It is an arithmetic number, because the mean of its divisors is an integer number (15295267353).

Almost surely, 2^61181069406 is an apocalyptic number.

61181069406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61181069406 is a wasteful number, since it uses less digits than its factorization.

61181069406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10196844906.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 61181069406 in words is "sixty-one billion, one hundred eighty-one million, sixty-nine thousand, four hundred six".