11661355450063 has 8 divisors (see below), whose sum is σ = 12852627938640. Its totient is φ = 10491941172480.

The previous prime is 11661355449979. The next prime is 11661355450079. The reversal of 11661355450063 is 36005455316611.

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 11661355450063 - 2⁹ = 11661355449551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11661355449995 and 11661355450022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661355450163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5464551628 + ... + 5464553761.

It is an arithmetic number, because the mean of its divisors is an integer number (1606578492330).

Almost surely, 2^{11661355450063} is an apocalyptic number.

11661355450063 is a deficient number, since it is larger than the sum of its proper divisors (1191272488577).

11661355450063 is a wasteful number, since it uses less digits than its factorization.

11661355450063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10929105497.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 11661355450063 in words is "eleven trillion, six hundred sixty-one billion, three hundred fifty-five million, four hundred fifty thousand, sixty-three".