61868342188 has 24 divisors (see below), whose sum is σ = 109655784000. Its totient is φ = 30538230528.

The previous prime is 61868342167. The next prime is 61868342269. The reversal of 61868342188 is 88124386816.

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 7 ways as a sum of consecutive naturals, for example, 4245138 + ... + 4259686.

It is an arithmetic number, because the mean of its divisors is an integer number (4568991000).

Almost surely, 2^61868342188 is an apocalyptic number.

It is an amenable number.

61868342188 is a deficient number, since it is larger than the sum of its proper divisors (47787441812).

61868342188 is a wasteful number, since it uses less digits than its factorization.

61868342188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28089 (or 28087 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 55.

The spelling of 61868342188 in words is "sixty-one billion, eight hundred sixty-eight million, three hundred forty-two thousand, one hundred eighty-eight".