21341266530 has 64 divisors (see below), whose sum is σ = 51590891520. Its totient is φ = 5649833664.

The previous prime is 21341266511. The next prime is 21341266559. The reversal of 21341266530 is 3566214312.

It is a junction number, because it is equal to n+sod(n) for n = 21341266491 and 21341266500.

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, 2495001 + ... + 2503539.

It is an arithmetic number, because the mean of its divisors is an integer number (806107680).

Almost surely, 2^21341266530 is an apocalyptic number.

21341266530 is an abundant number, since it is smaller than the sum of its proper divisors (30249624990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21341266530 is a wasteful number, since it uses less digits than its factorization.

21341266530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9143.

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 21341266530 in words is "twenty-one billion, three hundred forty-one million, two hundred sixty-six thousand, five hundred thirty".