21416000245 has 32 divisors (see below), whose sum is σ = 26460950400. Its totient is φ = 16633241856.

The previous prime is 21416000237. The next prime is 21416000251. The reversal of 21416000245 is 54200061412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21416000245 - 2³ = 21416000237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12530451 + ... + 12532159.

It is an arithmetic number, because the mean of its divisors is an integer number (826904700).

Almost surely, 2^21416000245 is an apocalyptic number.

It is an amenable number.

21416000245 is a deficient number, since it is larger than the sum of its proper divisors (5044950155).

21416000245 is a wasteful number, since it uses less digits than its factorization.

21416000245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 21416000245 its reverse (54200061412), we get a palindrome (75616061657).

The spelling of 21416000245 in words is "twenty-one billion, four hundred sixteen million, two hundred forty-five", and thus it is an aban number.