61686928237804 has 12 divisors (see below), whose sum is σ = 111674611465200. Its totient is φ = 29779896390608.

The previous prime is 61686928237801. The next prime is 61686928237813. The reversal of 61686928237804 is 40873282968616.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61686928237801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265891931944 + ... + 265891932175.

It is an arithmetic number, because the mean of its divisors is an integer number (9306217622100).

Almost surely, 2^{61686928237804} is an apocalyptic number.

It is an amenable number.

61686928237804 is a deficient number, since it is larger than the sum of its proper divisors (49987683227396).

61686928237804 is a wasteful number, since it uses less digits than its factorization.

61686928237804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531783864152 (or 531783864150 counting only the distinct ones).

The product of its (nonzero) digits is 334430208, while the sum is 70.

The spelling of 61686928237804 in words is "sixty-one trillion, six hundred eighty-six billion, nine hundred twenty-eight million, two hundred thirty-seven thousand, eight hundred four".