21014414506 has 8 divisors (see below), whose sum is σ = 31522745124. Its totient is φ = 10506832800.

The previous prime is 21014414497. The next prime is 21014414563. The reversal of 21014414506 is 60541441012.

It can be written as a sum of positive squares in 2 ways, for example, as 20032156225 + 982258281 = 141535^2 + 31341^2 .

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

It is a super-3 number, since 3×21014414506³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110845 + ... + 233056.

Almost surely, 2^21014414506 is an apocalyptic number.

21014414506 is a deficient number, since it is larger than the sum of its proper divisors (10508330618).

21014414506 is a wasteful number, since it uses less digits than its factorization.

21014414506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374456.

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 21014414506 its reverse (60541441012), we get a palindrome (81555855518).

The spelling of 21014414506 in words is "twenty-one billion, fourteen million, four hundred fourteen thousand, five hundred six".