21000414051 has 12 divisors (see below), whose sum is σ = 31457410712. Its totient is φ = 14000275872.

The previous prime is 21000414037. The next prime is 21000414067. The reversal of 21000414051 is 15041400012.

It is not a de Polignac number, because 21000414051 - 2¹¹ = 21000412003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21000410051) 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 11 ways as a sum of consecutive naturals, for example, 43210486 + ... + 43210971.

Almost surely, 2^21000414051 is an apocalyptic number.

21000414051 is a deficient number, since it is larger than the sum of its proper divisors (10456996661).

21000414051 is an frugal number, since it uses more digits than its factorization.

21000414051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86421472 (or 86421460 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 21000414051 its reverse (15041400012), we get a palindrome (36041814063).

The spelling of 21000414051 in words is "twenty-one billion, four hundred fourteen thousand, fifty-one".