611221663163 has 8 divisors (see below), whose sum is σ = 626617582416. Its totient is φ = 595848985600.

The previous prime is 611221663121. The next prime is 611221663181. The reversal of 611221663163 is 361366122116.

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 611221663163 - 2⁶ = 611221663099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611221663763) 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, 5757158 + ... + 5862363.

It is an arithmetic number, because the mean of its divisors is an integer number (78327197802).

Almost surely, 2^611221663163 is an apocalyptic number.

611221663163 is a deficient number, since it is larger than the sum of its proper divisors (15395919253).

611221663163 is a wasteful number, since it uses less digits than its factorization.

611221663163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11620845.

The product of its digits is 46656, while the sum is 38.

Adding to 611221663163 its reverse (361366122116), we get a palindrome (972587785279).

The spelling of 611221663163 in words is "six hundred eleven billion, two hundred twenty-one million, six hundred sixty-three thousand, one hundred sixty-three".