21459009135 has 64 divisors (see below), whose sum is σ = 37051378560. Its totient is φ = 10565959680.

The previous prime is 21459009097. The next prime is 21459009163. The reversal of 21459009135 is 53190095412.

It is not a de Polignac number, because 21459009135 - 2³⁴ = 4279139951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21459009093 and 21459009102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6360309 + ... + 6363681.

It is an arithmetic number, because the mean of its divisors is an integer number (578927790).

Almost surely, 2^21459009135 is an apocalyptic number.

21459009135 is a deficient number, since it is larger than the sum of its proper divisors (15592369425).

21459009135 is a wasteful number, since it uses less digits than its factorization.

21459009135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3868.

The product of its (nonzero) digits is 48600, while the sum is 39.

The spelling of 21459009135 in words is "twenty-one billion, four hundred fifty-nine million, nine thousand, one hundred thirty-five".