5651611566663 has 8 divisors (see below), whose sum is σ = 7538762673648. Its totient is φ = 3766100752064.

The previous prime is 5651611566661. The next prime is 5651611566773. The reversal of 5651611566663 is 3666651161565.

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 5651611566663 - 2¹ = 5651611566661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5651611566661) 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, 410065056 + ... + 410078837.

It is an arithmetic number, because the mean of its divisors is an integer number (942345334206).

Almost surely, 2^{5651611566663} is an apocalyptic number.

5651611566663 is a deficient number, since it is larger than the sum of its proper divisors (1887151106985).

5651611566663 is a wasteful number, since it uses less digits than its factorization.

5651611566663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820146193.

The product of its digits is 17496000, while the sum is 57.

The spelling of 5651611566663 in words is "five trillion, six hundred fifty-one billion, six hundred eleven million, five hundred sixty-six thousand, six hundred sixty-three".