5611801812 has 24 divisors (see below), whose sum is σ = 13289642016. Its totient is φ = 1842680928.

The previous prime is 5611801807. The next prime is 5611801823. The reversal of 5611801812 is 2181081165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3489123 + ... + 3490730.

It is an arithmetic number, because the mean of its divisors is an integer number (553735084).

Almost surely, 2^5611801812 is an apocalyptic number.

It is an amenable number.

5611801812 is an abundant number, since it is smaller than the sum of its proper divisors (7677840204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5611801812 is a wasteful number, since it uses less digits than its factorization.

5611801812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6979927 (or 6979925 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 33.

The square root of 5611801812 is about 74911.9604068669. The cubic root of 5611801812 is about 1777.0546134157.

Adding to 5611801812 its reverse (2181081165), we get a palindrome (7792882977).

The spelling of 5611801812 in words is "five billion, six hundred eleven million, eight hundred one thousand, eight hundred twelve".