61086439063 has 4 divisors (see below), whose sum is σ = 65785395928. Its totient is φ = 56387482200.

The previous prime is 61086438983. The next prime is 61086439067. The reversal of 61086439063 is 36093468016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61086439063 - 2⁹ = 61086438551 is a prime.

It is a super-2 number, since 2×61086439063² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61086439067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2349478413 + ... + 2349478438.

It is an arithmetic number, because the mean of its divisors is an integer number (16446348982).

Almost surely, 2^61086439063 is an apocalyptic number.

61086439063 is a deficient number, since it is larger than the sum of its proper divisors (4698956865).

61086439063 is a wasteful number, since it uses less digits than its factorization.

61086439063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698956864.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 61086439063 in words is "sixty-one billion, eighty-six million, four hundred thirty-nine thousand, sixty-three".