27801805004 has 12 divisors (see below), whose sum is σ = 48681245424. Its totient is φ = 13892877744.

The previous prime is 27801805001. The next prime is 27801805033. The reversal of 27801805004 is 40050810872.

It is a super-2 number, since 2×27801805004² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27801805001) 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, 1998392 + ... + 2012255.

It is an arithmetic number, because the mean of its divisors is an integer number (4056770452).

Almost surely, 2^27801805004 is an apocalyptic number.

It is an amenable number.

27801805004 is a deficient number, since it is larger than the sum of its proper divisors (20879440420).

27801805004 is a wasteful number, since it uses less digits than its factorization.

27801805004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012384 (or 4012382 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The spelling of 27801805004 in words is "twenty-seven billion, eight hundred one million, eight hundred five thousand, four".