61110006111111 has 4 divisors (see below), whose sum is σ = 81480008148152. Its totient is φ = 40740004074072.

The previous prime is 61110006111101. The next prime is 61110006111113. The reversal of 61110006111111 is 11111160001116.

61110006111111 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.

It is not a de Polignac number, because 61110006111111 - 2¹⁴ = 61110006094727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61110006111113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10185001018516 + ... + 10185001018521.

It is an arithmetic number, because the mean of its divisors is an integer number (20370002037038).

Almost surely, 2^{61110006111111} is an apocalyptic number.

61110006111111 is a deficient number, since it is larger than the sum of its proper divisors (20370002037041).

61110006111111 is a wasteful number, since it uses less digits than its factorization.

61110006111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20370002037040.

The product of its (nonzero) digits is 36, while the sum is 21.

Adding to 61110006111111 its reverse (11111160001116), we get a palindrome (72221166112227).

The spelling of 61110006111111 in words is "sixty-one trillion, one hundred ten billion, six million, one hundred eleven thousand, one hundred eleven".