6111722783945 has 4 divisors (see below), whose sum is σ = 7334067340740. Its totient is φ = 4889378227152.

The previous prime is 6111722783909. The next prime is 6111722783983. The reversal of 6111722783945 is 5493872271116.

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 3019625617849 + 3092097166096 = 1737707^2 + 1758436^2 .

It is a cyclic number.

It is not a de Polignac number, because 6111722783945 - 2³² = 6107427816649 is a prime.

It is a super-2 number, since 2×6111722783945² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611172278390 + ... + 611172278399.

It is an arithmetic number, because the mean of its divisors is an integer number (1833516835185).

Almost surely, 2^{6111722783945} is an apocalyptic number.

It is an amenable number.

6111722783945 is a deficient number, since it is larger than the sum of its proper divisors (1222344556795).

6111722783945 is a wasteful number, since it uses less digits than its factorization.

6111722783945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222344556794.

The product of its digits is 5080320, while the sum is 56.

The spelling of 6111722783945 in words is "six trillion, one hundred eleven billion, seven hundred twenty-two million, seven hundred eighty-three thousand, nine hundred forty-five".