611723394445 has 8 divisors (see below), whose sum is σ = 777248548344. Its totient is φ = 460591732224.

The previous prime is 611723394419. The next prime is 611723394497. The reversal of 611723394445 is 544493327116.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 63255771049 + 548467623396 = 251507^2 + 740586^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 611723394445 - 2²⁹ = 611186523533 is a prime.

It is a super-2 number, since 2×611723394445² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3598372824 + ... + 3598372993.

It is an arithmetic number, because the mean of its divisors is an integer number (97156068543).

Almost surely, 2^611723394445 is an apocalyptic number.

It is an amenable number.

611723394445 is a deficient number, since it is larger than the sum of its proper divisors (165525153899).

611723394445 is a wasteful number, since it uses less digits than its factorization.

611723394445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196745839.

The product of its digits is 2177280, while the sum is 49.

The spelling of 611723394445 in words is "six hundred eleven billion, seven hundred twenty-three million, three hundred ninety-four thousand, four hundred forty-five".