21071662151000 has 32 divisors (see below), whose sum is σ = 49307689435680. Its totient is φ = 8428664860000.

The previous prime is 21071662150859. The next prime is 21071662151009. The reversal of 21071662151000 is 15126617012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21071662151009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10535830076 + ... + 10535832075.

It is an arithmetic number, because the mean of its divisors is an integer number (1540865294865).

Almost surely, 2^{21071662151000} is an apocalyptic number.

21071662151000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21071662151000 is an abundant number, since it is smaller than the sum of its proper divisors (28236027284680).

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

21071662151000 is a wasteful number, since it uses less digits than its factorization.

21071662151000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21071662172 (or 21071662158 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

Adding to 21071662151000 its reverse (15126617012), we get a palindrome (21086788768012).

The spelling of 21071662151000 in words is "twenty-one trillion, seventy-one billion, six hundred sixty-two million, one hundred fifty-one thousand".