655165561111 has 8 divisors (see below), whose sum is σ = 663438353760. Its totient is φ = 646913021568.

The previous prime is 655165561093. The next prime is 655165561181. The reversal of 655165561111 is 111165561556.

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 655165561111 - 2¹³ = 655165552919 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 (655165561181) 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, 4998166 + ... + 5127571.

It is an arithmetic number, because the mean of its divisors is an integer number (82929794220).

Almost surely, 2^655165561111 is an apocalyptic number.

655165561111 is a deficient number, since it is larger than the sum of its proper divisors (8272792649).

655165561111 is a wasteful number, since it uses less digits than its factorization.

655165561111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10126553.

The product of its digits is 135000, while the sum is 43.

The spelling of 655165561111 in words is "six hundred fifty-five billion, one hundred sixty-five million, five hundred sixty-one thousand, one hundred eleven".