61541413642 has 8 divisors (see below), whose sum is σ = 92324352132. Its totient is φ = 30766629600.

The previous prime is 61541413603. The next prime is 61541413673. The reversal of 61541413642 is 24631414516.

It can be written as a sum of positive squares in 2 ways, for example, as 61044079041 + 497334601 = 247071^2 + 22301^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2019709 + ... + 2049952.

Almost surely, 2^61541413642 is an apocalyptic number.

61541413642 is a deficient number, since it is larger than the sum of its proper divisors (30782938490).

61541413642 is a wasteful number, since it uses less digits than its factorization.

61541413642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077224.

The product of its digits is 69120, while the sum is 37.

The spelling of 61541413642 in words is "sixty-one billion, five hundred forty-one million, four hundred thirteen thousand, six hundred forty-two".