61109912 has 16 divisors (see below), whose sum is σ = 115962840. Its totient is φ = 30186496.

The previous prime is 61109911. The next prime is 61109921. The reversal of 61109912 is 21990116.

61109912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61109911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45353 + ... + 46680.

Almost surely, 2^61109912 is an apocalyptic number.

It is an amenable number.

61109912 is a deficient number, since it is larger than the sum of its proper divisors (54852928).

61109912 is a wasteful number, since it uses less digits than its factorization.

61109912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92122 (or 92118 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 61109912 is about 7817.2829039251. The cubic root of 61109912 is about 393.8860072023.

The spelling of 61109912 in words is "sixty-one million, one hundred nine thousand, nine hundred twelve".