61668200186803 has 16 divisors (see below), whose sum is σ = 75847043853504. Its totient is φ = 48933576668160.

The previous prime is 61668200186731. The next prime is 61668200186867. The reversal of 61668200186803 is 30868100286616.

61668200186803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61668200186803 - 2¹⁷ = 61668200055731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61668200184803) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4247699050 + ... + 4247713567.

It is an arithmetic number, because the mean of its divisors is an integer number (4740440240844).

Almost surely, 2^{61668200186803} is an apocalyptic number.

61668200186803 is a deficient number, since it is larger than the sum of its proper divisors (14178843666701).

61668200186803 is a wasteful number, since it uses less digits than its factorization.

61668200186803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8495412702.

The product of its (nonzero) digits is 3981312, while the sum is 55.

It can be divided in two parts, 61668200 and 186803, that added together give a triangular number (61855003 = T₁₁₁₂₂).

The spelling of 61668200186803 in words is "sixty-one trillion, six hundred sixty-eight billion, two hundred million, one hundred eighty-six thousand, eight hundred three".