21448795105 has 32 divisors (see below), whose sum is σ = 26686260000. Its totient is φ = 16536748032.

The previous prime is 21448795099. The next prime is 21448795141. The reversal of 21448795105 is 50159784412.

It can be written as a sum of positive squares in 16 ways, for example, as 3663638784 + 17785156321 = 60528^2 + 133361^2 .

It is not a de Polignac number, because 21448795105 - 2¹¹ = 21448793057 is a prime.

It is a super-2 number, since 2×21448795105² (a number of 21 digits) contains 22 as substring.

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, 12375819 + ... + 12377551.

It is an arithmetic number, because the mean of its divisors is an integer number (833945625).

Almost surely, 2^21448795105 is an apocalyptic number.

It is an amenable number.

21448795105 is a deficient number, since it is larger than the sum of its proper divisors (5237464895).

21448795105 is a wasteful number, since it uses less digits than its factorization.

21448795105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 21448795105 in words is "twenty-one billion, four hundred forty-eight million, seven hundred ninety-five thousand, one hundred five".