561011116 has 12 divisors (see below), whose sum is σ = 987649488. Its totient is φ = 278825552.

The previous prime is 561011107. The next prime is 561011137. The reversal of 561011116 is 611110165.

It is an unprimeable number.

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, 419251 + ... + 420586.

It is an arithmetic number, because the mean of its divisors is an integer number (82304124).

Almost surely, 2^561011116 is an apocalyptic number.

It is an amenable number.

561011116 is a deficient number, since it is larger than the sum of its proper divisors (426638372).

561011116 is a wasteful number, since it uses less digits than its factorization.

561011116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840008 (or 840006 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 561011116 is about 23685.6732224355. The cubic root of 561011116 is about 824.7528447275.

The spelling of 561011116 in words is "five hundred sixty-one million, eleven thousand, one hundred sixteen".