61111118 has 8 divisors (see below), whose sum is σ = 91736400. Its totient is φ = 30532320.

The previous prime is 61111111. The next prime is 61111121. The reversal of 61111118 is 81111116.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61111118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61111111) 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, 8123 + ... + 13718.

It is an arithmetic number, because the mean of its divisors is an integer number (11467050).

Almost surely, 2^61111118 is an apocalyptic number.

61111118 is a deficient number, since it is larger than the sum of its proper divisors (30625282).

61111118 is a wasteful number, since it uses less digits than its factorization.

61111118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23242.

The product of its digits is 48, while the sum is 20.

The square root of 61111118 is about 7817.3600403205. The cubic root of 61111118 is about 393.8885982898. Note that the first 3 decimals are identical.

The spelling of 61111118 in words is "sixty-one million, one hundred eleven thousand, one hundred eighteen".