655506001111 has 8 divisors (see below), whose sum is σ = 707000762160. Its totient is φ = 604164271872.

The previous prime is 655506001097. The next prime is 655506001193. The reversal of 655506001111 is 111100605556.

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 655506001111 - 2⁷ = 655506000983 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 (655506001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38249050 + ... + 38266183.

It is an arithmetic number, because the mean of its divisors is an integer number (88375095270).

Almost surely, 2^655506001111 is an apocalyptic number.

655506001111 is a deficient number, since it is larger than the sum of its proper divisors (51494761049).

655506001111 is a wasteful number, since it uses less digits than its factorization.

655506001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76515905.

The product of its (nonzero) digits is 4500, while the sum is 31.

Adding to 655506001111 its reverse (111100605556), we get a palindrome (766606606667).

The spelling of 655506001111 in words is "six hundred fifty-five billion, five hundred six million, one thousand, one hundred eleven".