611255030641 has 4 divisors (see below), whose sum is σ = 647211208932. Its totient is φ = 575298852352.

The previous prime is 611255030609. The next prime is 611255030651. The reversal of 611255030641 is 146030552116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 247808822416 + 363446208225 = 497804^2 + 602865^2 .

It is a cyclic number.

It is not a de Polignac number, because 611255030641 - 2⁵ = 611255030609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 611255030597 and 611255030606.

It is not an unprimeable number, because it can be changed into a prime (611255030651) 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, 17978089120 + ... + 17978089153.

It is an arithmetic number, because the mean of its divisors is an integer number (161802802233).

Almost surely, 2^611255030641 is an apocalyptic number.

It is an amenable number.

611255030641 is a deficient number, since it is larger than the sum of its proper divisors (35956178291).

611255030641 is a wasteful number, since it uses less digits than its factorization.

611255030641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35956178290.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 611255030641 its reverse (146030552116), we get a palindrome (757285582757).

The spelling of 611255030641 in words is "six hundred eleven billion, two hundred fifty-five million, thirty thousand, six hundred forty-one".