21152141366504 has 64 divisors (see below), whose sum is σ = 41205352827600. Its totient is φ = 10170775701504.

The previous prime is 21152141366453. The next prime is 21152141366561. The reversal of 21152141366504 is 40566314125112.

It can be written as a sum of positive squares in 8 ways, for example, as 1693897044004 + 19458244322500 = 1301498^2 + 4411150^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70372922 + ... + 70672854.

Almost surely, 2^{21152141366504} is an apocalyptic number.

It is an amenable number.

21152141366504 is a deficient number, since it is larger than the sum of its proper divisors (20053211461096).

21152141366504 is a wasteful number, since it uses less digits than its factorization.

21152141366504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302742 (or 302738 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 21152141366504 in words is "twenty-one trillion, one hundred fifty-two billion, one hundred forty-one million, three hundred sixty-six thousand, five hundred four".