27403500021 has 24 divisors (see below), whose sum is σ = 37144435104. Its totient is φ = 17970654240.

The previous prime is 27403500011. The next prime is 27403500037. The reversal of 27403500021 is 12000530472.

It is not a de Polignac number, because 27403500021 - 2⁵ = 27403499989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27403499964 and 27403500000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27403500011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15903666 + ... + 15905388.

It is an arithmetic number, because the mean of its divisors is an integer number (1547684796).

Almost surely, 2^27403500021 is an apocalyptic number.

It is an amenable number.

27403500021 is a deficient number, since it is larger than the sum of its proper divisors (9740935083).

27403500021 is a wasteful number, since it uses less digits than its factorization.

27403500021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041 (or 2974 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The spelling of 27403500021 in words is "twenty-seven billion, four hundred three million, five hundred thousand, twenty-one".