21341000065 has 32 divisors (see below), whose sum is σ = 33806502144. Its totient is φ = 12520919040.

The previous prime is 21341000059. The next prime is 21341000071. The reversal of 21341000065 is 56000014312.

It is an interprime number because it is at equal distance from previous prime (21341000059) and next prime (21341000071).

It is not a de Polignac number, because 21341000065 - 2⁹ = 21340999553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1623784 + ... + 1636873.

It is an arithmetic number, because the mean of its divisors is an integer number (1056453192).

Almost surely, 2^21341000065 is an apocalyptic number.

It is an amenable number.

21341000065 is a deficient number, since it is larger than the sum of its proper divisors (12465502079).

21341000065 is a wasteful number, since it uses less digits than its factorization.

21341000065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260697.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 21341000065 its reverse (56000014312), we get a palindrome (77341014377).

The spelling of 21341000065 in words is "twenty-one billion, three hundred forty-one million, sixty-five", and thus it is an aban number.