611728212133 has 4 divisors (see below), whose sum is σ = 611731277248. Its totient is φ = 611725147020.

The previous prime is 611728212127. The next prime is 611728212157. The reversal of 611728212133 is 331212827116.

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 611728212133 - 2¹⁷ = 611728081061 is a prime.

It is a super-2 number, since 2×611728212133² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 611728212092 and 611728212101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611728213133) 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, 1210653 + ... + 1639858.

It is an arithmetic number, because the mean of its divisors is an integer number (152932819312).

Almost surely, 2^611728212133 is an apocalyptic number.

It is an amenable number.

611728212133 is a deficient number, since it is larger than the sum of its proper divisors (3065115).

611728212133 is a wasteful number, since it uses less digits than its factorization.

611728212133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065114.

The product of its digits is 24192, while the sum is 37.

The spelling of 611728212133 in words is "six hundred eleven billion, seven hundred twenty-eight million, two hundred twelve thousand, one hundred thirty-three".