61331486843 has 16 divisors (see below), whose sum is σ = 68607393120. Its totient is φ = 54341683200.

The previous prime is 61331486813. The next prime is 61331486899. The reversal of 61331486843 is 34868413316.

It is a cyclic number.

It is not a de Polignac number, because 61331486843 - 2²⁴ = 61314709627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61331486813) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 387671 + ... + 522447.

It is an arithmetic number, because the mean of its divisors is an integer number (4287962070).

Almost surely, 2^61331486843 is an apocalyptic number.

61331486843 is a deficient number, since it is larger than the sum of its proper divisors (7275906277).

61331486843 is a wasteful number, since it uses less digits than its factorization.

61331486843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135838.

The product of its digits is 995328, while the sum is 47.

The spelling of 61331486843 in words is "sixty-one billion, three hundred thirty-one million, four hundred eighty-six thousand, eight hundred forty-three".