63727534085 has 8 divisors (see below), whose sum is σ = 76553291160. Its totient is φ = 50928527104.

The previous prime is 63727534081. The next prime is 63727534099. The reversal of 63727534085 is 58043572736.

It can be written as a sum of positive squares in 4 ways, for example, as 3536799841 + 60190734244 = 59471^2 + 245338^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 63727534085 - 2² = 63727534081 is a prime.

It is a super-2 number, since 2×63727534085² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63727534081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6682280 + ... + 6691809.

It is an arithmetic number, because the mean of its divisors is an integer number (9569161395).

Almost surely, 2^63727534085 is an apocalyptic number.

It is an amenable number.

63727534085 is a deficient number, since it is larger than the sum of its proper divisors (12825757075).

63727534085 is a wasteful number, since it uses less digits than its factorization.

63727534085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13375047.

The product of its (nonzero) digits is 4233600, while the sum is 50.

It can be divided in two parts, 6372 and 7534085, that added together give a palindrome (7540457).

The spelling of 63727534085 in words is "sixty-three billion, seven hundred twenty-seven million, five hundred thirty-four thousand, eighty-five".