61683039685420 has 24 divisors (see below), whose sum is σ = 129616419114000. Its totient is φ = 24657590012352.

The previous prime is 61683039685403. The next prime is 61683039685453. The reversal of 61683039685420 is 2458693038616.

61683039685420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 976583995 + ... + 976647154.

It is an arithmetic number, because the mean of its divisors is an integer number (5400684129750).

Almost surely, 2^{61683039685420} is an apocalyptic number.

It is an amenable number.

61683039685420 is an abundant number, since it is smaller than the sum of its proper divisors (67933379428580).

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

61683039685420 is a wasteful number, since it uses less digits than its factorization.

61683039685420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953232737 (or 1953232735 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 61.

The spelling of 61683039685420 in words is "sixty-one trillion, six hundred eighty-three billion, thirty-nine million, six hundred eighty-five thousand, four hundred twenty".