21299048265 has 32 divisors (see below), whose sum is σ = 37193435136. Its totient is φ = 10322112960.

The previous prime is 21299048219. The next prime is 21299048273. The reversal of 21299048265 is 56284099212.

It is not a de Polignac number, because 21299048265 - 2⁷ = 21299048137 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349134 + ... + 405576.

It is an arithmetic number, because the mean of its divisors is an integer number (1162294848).

Almost surely, 2^21299048265 is an apocalyptic number.

It is an amenable number.

21299048265 is a deficient number, since it is larger than the sum of its proper divisors (15894386871).

21299048265 is a wasteful number, since it uses less digits than its factorization.

21299048265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58749.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 21299048265 in words is "twenty-one billion, two hundred ninety-nine million, forty-eight thousand, two hundred sixty-five".