21339139570305 has 32 divisors (see below), whose sum is σ = 34260135356160. Its totient is φ = 11341705992960.

The previous prime is 21339139570271. The next prime is 21339139570321. The reversal of 21339139570305 is 50307593193312.

It is not a de Polignac number, because 21339139570305 - 2¹⁰ = 21339139569281 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292798020 + ... + 292870890.

It is an arithmetic number, because the mean of its divisors is an integer number (1070629229880).

Almost surely, 2^{21339139570305} is an apocalyptic number.

It is an amenable number.

21339139570305 is a deficient number, since it is larger than the sum of its proper divisors (12920995785855).

21339139570305 is a wasteful number, since it uses less digits than its factorization.

21339139570305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139801.

The product of its (nonzero) digits is 2296350, while the sum is 51.

The spelling of 21339139570305 in words is "twenty-one trillion, three hundred thirty-nine billion, one hundred thirty-nine million, five hundred seventy thousand, three hundred five".