21448495268 has 24 divisors (see below), whose sum is σ = 39517571520. Its totient is φ = 10157965920.

The previous prime is 21448495267. The next prime is 21448495273. The reversal of 21448495268 is 86259484412.

It is a super-3 number, since 3×21448495268³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (21448495267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453458 + ... + 498518.

It is an arithmetic number, because the mean of its divisors is an integer number (1646565480).

Almost surely, 2^21448495268 is an apocalyptic number.

It is an amenable number.

21448495268 is a deficient number, since it is larger than the sum of its proper divisors (18069076252).

21448495268 is a wasteful number, since it uses less digits than its factorization.

21448495268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51347 (or 51345 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 53.

The spelling of 21448495268 in words is "twenty-one billion, four hundred forty-eight million, four hundred ninety-five thousand, two hundred sixty-eight".