61110009 has 12 divisors (see below), whose sum is σ = 90323376. Its totient is φ = 39792312.

The previous prime is 61109999. The next prime is 61110089. The reversal of 61110009 is 90001116.

It is not a de Polignac number, because 61110009 - 2¹⁷ = 60978937 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61109973 and 61110000.

It is not an unprimeable number, because it can be changed into a prime (61110089) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78567 + ... + 79340.

It is an arithmetic number, because the mean of its divisors is an integer number (7526948).

Almost surely, 2^61110009 is an apocalyptic number.

It is an amenable number.

61110009 is a deficient number, since it is larger than the sum of its proper divisors (29213367).

61110009 is a wasteful number, since it uses less digits than its factorization.

61110009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157956 (or 157953 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 61110009 is about 7817.2891081244. The cubic root of 61110009 is about 393.8862156077.

The spelling of 61110009 in words is "sixty-one million, one hundred ten thousand, nine".