61339859057 has 8 divisors (see below), whose sum is σ = 62131578600. Its totient is φ = 60551391744.

The previous prime is 61339859041. The next prime is 61339859059. The reversal of 61339859057 is 75095893316.

It can be written as a sum of positive squares in 4 ways, for example, as 20666650081 + 40673208976 = 143759^2 + 201676^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61339859057 - 2⁴ = 61339859041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61339858993 and 61339859011.

It is not an unprimeable number, because it can be changed into a prime (61339859059) 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 7 ways as a sum of consecutive naturals, for example, 775082 + ... + 850547.

It is an arithmetic number, because the mean of its divisors is an integer number (7766447325).

Almost surely, 2^61339859057 is an apocalyptic number.

It is an amenable number.

61339859057 is a deficient number, since it is larger than the sum of its proper divisors (791719543).

61339859057 is a wasteful number, since it uses less digits than its factorization.

61339859057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626115.

The product of its (nonzero) digits is 6123600, while the sum is 56.

The spelling of 61339859057 in words is "sixty-one billion, three hundred thirty-nine million, eight hundred fifty-nine thousand, fifty-seven".