655711681169 has 4 divisors (see below), whose sum is σ = 657423722496. Its totient is φ = 653999639844.

The previous prime is 655711681133. The next prime is 655711681193. The reversal of 655711681169 is 961186117556.

It is a happy number.

655711681169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 655711681169 - 2²⁸ = 655443245713 is a prime.

It is a super-2 number, since 2×655711681169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655711681129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856020089 + ... + 856020854.

It is an arithmetic number, because the mean of its divisors is an integer number (164355930624).

Almost surely, 2^655711681169 is an apocalyptic number.

It is an amenable number.

655711681169 is a deficient number, since it is larger than the sum of its proper divisors (1712041327).

655711681169 is a wasteful number, since it uses less digits than its factorization.

655711681169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712041326.

The product of its digits is 2721600, while the sum is 56.

The spelling of 655711681169 in words is "six hundred fifty-five billion, seven hundred eleven million, six hundred eighty-one thousand, one hundred sixty-nine".