21160730204 has 24 divisors (see below), whose sum is σ = 38650099488. Its totient is φ = 10118053440.

The previous prime is 21160730189. The next prime is 21160730207. The reversal of 21160730204 is 40203706112.

It is a super-3 number, since 3×21160730204³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21160730207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423554 + ... + 470870.

It is an arithmetic number, because the mean of its divisors is an integer number (1610420812).

Almost surely, 2^21160730204 is an apocalyptic number.

It is an amenable number.

21160730204 is a deficient number, since it is larger than the sum of its proper divisors (17489369284).

21160730204 is a wasteful number, since it uses less digits than its factorization.

21160730204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52205 (or 52203 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 21160730204 in words is "twenty-one billion, one hundred sixty million, seven hundred thirty thousand, two hundred four".