61613304187188 has 24 divisors (see below), whose sum is σ = 154823174624608. Its totient is φ = 18957939749856.

The previous prime is 61613304187091. The next prime is 61613304187199. The reversal of 61613304187188 is 88178140331616.

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 7 ways as a sum of consecutive naturals, for example, 197478538906 + ... + 197478539217.

Almost surely, 2^{61613304187188} is an apocalyptic number.

It is an amenable number.

61613304187188 is an abundant number, since it is smaller than the sum of its proper divisors (93209870437420).

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

61613304187188 is a wasteful number, since it uses less digits than its factorization.

61613304187188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394957078143 (or 394957078141 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 57.

The spelling of 61613304187188 in words is "sixty-one trillion, six hundred thirteen billion, three hundred four million, one hundred eighty-seven thousand, one hundred eighty-eight".