63612144539 has 4 divisors (see below), whose sum is σ = 63935049024. Its totient is φ = 63289240056.

The previous prime is 63612144523. The next prime is 63612144559. The reversal of 63612144539 is 93544121636.

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 63612144539 - 2⁴ = 63612144523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63612144539.

It is not an unprimeable number, because it can be changed into a prime (63612144559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161451947 + ... + 161452340.

It is an arithmetic number, because the mean of its divisors is an integer number (15983762256).

Almost surely, 2^63612144539 is an apocalyptic number.

63612144539 is a deficient number, since it is larger than the sum of its proper divisors (322904485).

63612144539 is a wasteful number, since it uses less digits than its factorization.

63612144539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322904484.

The product of its digits is 466560, while the sum is 44.

The spelling of 63612144539 in words is "sixty-three billion, six hundred twelve million, one hundred forty-four thousand, five hundred thirty-nine".