21040514606 has 8 divisors (see below), whose sum is σ = 31564707480. Its totient is φ = 10518945448.

The previous prime is 21040514531. The next prime is 21040514611. The reversal of 21040514606 is 60641504012.

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, 635756 + ... + 668031.

It is an arithmetic number, because the mean of its divisors is an integer number (3945588435).

Almost surely, 2^21040514606 is an apocalyptic number.

21040514606 is a deficient number, since it is larger than the sum of its proper divisors (10524192874).

21040514606 is a wasteful number, since it uses less digits than its factorization.

21040514606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311858.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 21040514606 in words is "twenty-one billion, forty million, five hundred fourteen thousand, six hundred six".