21430541255 has 16 divisors (see below), whose sum is σ = 26472023424. Its totient is φ = 16647521280.

The previous prime is 21430541243. The next prime is 21430541281. The reversal of 21430541255 is 55214503412.

It is not a de Polignac number, because 21430541255 - 2¹⁰ = 21430540231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391151 + ... + 442560.

It is an arithmetic number, because the mean of its divisors is an integer number (1654501464).

Almost surely, 2^21430541255 is an apocalyptic number.

21430541255 is a deficient number, since it is larger than the sum of its proper divisors (5041482169).

21430541255 is an equidigital number, since it uses as much as digits as its factorization.

21430541255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833866.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 21430541255 in words is "twenty-one billion, four hundred thirty million, five hundred forty-one thousand, two hundred fifty-five".