21294000459 has 24 divisors (see below), whose sum is σ = 31542434352. Its totient is φ = 13835404800.

The previous prime is 21294000439. The next prime is 21294000467. The reversal of 21294000459 is 95400049212.

It is not a de Polignac number, because 21294000459 - 2⁷ = 21294000331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21294000439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116659 + ... + 237059.

It is an arithmetic number, because the mean of its divisors is an integer number (1314268098).

Almost surely, 2^21294000459 is an apocalyptic number.

21294000459 is a deficient number, since it is larger than the sum of its proper divisors (10248433893).

21294000459 is a wasteful number, since it uses less digits than its factorization.

21294000459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120907 (or 120904 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 21294000459 in words is "twenty-one billion, two hundred ninety-four million, four hundred fifty-nine", and thus it is an aban number.