21001514006 has 8 divisors (see below), whose sum is σ = 34366113864. Its totient is φ = 9546142720.

The previous prime is 21001513999. The next prime is 21001514033. The reversal of 21001514006 is 60041510012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 477307115 + ... + 477307158.

It is an arithmetic number, because the mean of its divisors is an integer number (4295764233).

Almost surely, 2^21001514006 is an apocalyptic number.

21001514006 is a deficient number, since it is larger than the sum of its proper divisors (13364599858).

21001514006 is a wasteful number, since it uses less digits than its factorization.

21001514006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954614286.

The product of its (nonzero) digits is 240, while the sum is 20.

The spelling of 21001514006 in words is "twenty-one billion, one million, five hundred fourteen thousand, six".