63531665326111 has 16 divisors (see below), whose sum is σ = 67750018640640. Its totient is φ = 59402245587840.

The previous prime is 63531665326109. The next prime is 63531665326159. The reversal of 63531665326111 is 11162356613536.

It is a cyclic number.

It is not a de Polignac number, because 63531665326111 - 2¹ = 63531665326109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63531665323111) 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, 18941370 + ... + 22041751.

It is an arithmetic number, because the mean of its divisors is an integer number (4234376165040).

Almost surely, 2^{63531665326111} is an apocalyptic number.

63531665326111 is a deficient number, since it is larger than the sum of its proper divisors (4218353314529).

63531665326111 is a wasteful number, since it uses less digits than its factorization.

63531665326111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40984206.

The product of its digits is 1749600, while the sum is 49.

The spelling of 63531665326111 in words is "sixty-three trillion, five hundred thirty-one billion, six hundred sixty-five million, three hundred twenty-six thousand, one hundred eleven".