611606665453 has 4 divisors (see below), whose sum is σ = 698979046240. Its totient is φ = 524234284668.

The previous prime is 611606665433. The next prime is 611606665459. The reversal of 611606665453 is 354566606116.

611606665453 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 611606665453 - 2²⁹ = 611069794541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 611606665397 and 611606665406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611606665459) 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, 43686190383 + ... + 43686190396.

It is an arithmetic number, because the mean of its divisors is an integer number (174744761560).

Almost surely, 2^611606665453 is an apocalyptic number.

It is an amenable number.

611606665453 is a deficient number, since it is larger than the sum of its proper divisors (87372380787).

611606665453 is an equidigital number, since it uses as much as digits as its factorization.

611606665453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87372380786.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 611606665453 in words is "six hundred eleven billion, six hundred six million, six hundred sixty-five thousand, four hundred fifty-three".