21514501006 has 8 divisors (see below), whose sum is σ = 32278446144. Its totient is φ = 10755018960.

The previous prime is 21514500979. The next prime is 21514501031. The reversal of 21514501006 is 60010541512.

It is a happy number.

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

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, 1103695 + ... + 1123018.

It is an arithmetic number, because the mean of its divisors is an integer number (4034805768).

Almost surely, 2^21514501006 is an apocalyptic number.

21514501006 is a deficient number, since it is larger than the sum of its proper divisors (10763945138).

21514501006 is a wasteful number, since it uses less digits than its factorization.

21514501006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231546.

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 21514501006 in words is "twenty-one billion, five hundred fourteen million, five hundred one thousand, six".