7116745561 has 4 divisors (see below), whose sum is σ = 7222965712. Its totient is φ = 7010525412.

The previous prime is 7116745553. The next prime is 7116745577. The reversal of 7116745561 is 1655476117.

It is a happy number.

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 7116745561 - 2³ = 7116745553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7116745591) 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, 53109975 + ... + 53110108.

It is an arithmetic number, because the mean of its divisors is an integer number (1805741428).

Almost surely, 2^7116745561 is an apocalyptic number.

It is an amenable number.

7116745561 is a deficient number, since it is larger than the sum of its proper divisors (106220151).

7116745561 is a wasteful number, since it uses less digits than its factorization.

7116745561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106220150.

The product of its digits is 176400, while the sum is 43.

The square root of 7116745561 is about 84360.8058342261. The cubic root of 7116745561 is about 1923.5071856768.

The spelling of 7116745561 in words is "seven billion, one hundred sixteen million, seven hundred forty-five thousand, five hundred sixty-one".