61111119 has 4 divisors (see below), whose sum is σ = 81481496. Its totient is φ = 40740744.

The previous prime is 61111111. The next prime is 61111121. The reversal of 61111119 is 91111116.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61111119 - 2³ = 61111111 is a prime.

It is a super-2 number, since 2×61111119² = 7469137730864322, which contains 22 as substring.

61111119 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61111095 and 61111104.

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, 10185184 + ... + 10185189.

It is an arithmetic number, because the mean of its divisors is an integer number (20370374).

Almost surely, 2^61111119 is an apocalyptic number.

61111119 is a deficient number, since it is larger than the sum of its proper divisors (20370377).

61111119 is a wasteful number, since it uses less digits than its factorization.

61111119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20370376.

The product of its digits is 54, while the sum is 21.

The square root of 61111119 is about 7817.3601042807. The cubic root of 61111119 is about 393.8886004383. Note that the first 3 decimals are identical.

The spelling of 61111119 in words is "sixty-one million, one hundred eleven thousand, one hundred nineteen".