61511160011 has 8 divisors (see below), whose sum is σ = 70457159424. Its totient is φ = 52604833320.

The previous prime is 61511159929. The next prime is 61511160031. The reversal of 61511160011 is 11006111516.

It is a happy number.

61511160011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61511160011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61511160031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9914855 + ... + 9921056.

It is an arithmetic number, because the mean of its divisors is an integer number (8807144928).

Almost surely, 2^61511160011 is an apocalyptic number.

61511160011 is a deficient number, since it is larger than the sum of its proper divisors (8945999413).

61511160011 is a wasteful number, since it uses less digits than its factorization.

61511160011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19836361.

The product of its (nonzero) digits is 180, while the sum is 23.

Adding to 61511160011 its reverse (11006111516), we get a palindrome (72517271527).

The spelling of 61511160011 in words is "sixty-one billion, five hundred eleven million, one hundred sixty thousand, eleven".