611711266321 has 4 divisors (see below), whose sum is σ = 613559336944. Its totient is φ = 609863195700.

The previous prime is 611711266279. The next prime is 611711266343. The reversal of 611711266321 is 123662117116.

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 611711266321 - 2²³ = 611702877713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611711266121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924034815 + ... + 924035476.

It is an arithmetic number, because the mean of its divisors is an integer number (153389834236).

Almost surely, 2^611711266321 is an apocalyptic number.

It is an amenable number.

611711266321 is a deficient number, since it is larger than the sum of its proper divisors (1848070623).

611711266321 is a wasteful number, since it uses less digits than its factorization.

611711266321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848070622.

The product of its digits is 18144, while the sum is 37.

The spelling of 611711266321 in words is "six hundred eleven billion, seven hundred eleven million, two hundred sixty-six thousand, three hundred twenty-one".