21064605341 has 16 divisors (see below), whose sum is σ = 23967095040. Its totient is φ = 18352837440.

The previous prime is 21064605313. The next prime is 21064605389. The reversal of 21064605341 is 14350646012.

It is a cyclic number.

It is not a de Polignac number, because 21064605341 - 2¹⁴ = 21064588957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21064605298 and 21064605307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21064605311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90410 + ... + 224283.

It is an arithmetic number, because the mean of its divisors is an integer number (1497943440).

Almost surely, 2^21064605341 is an apocalyptic number.

It is an amenable number.

21064605341 is a deficient number, since it is larger than the sum of its proper divisors (2902489699).

21064605341 is a wasteful number, since it uses less digits than its factorization.

21064605341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314996.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 21064605341 in words is "twenty-one billion, sixty-four million, six hundred five thousand, three hundred forty-one".