21495425048 has 24 divisors (see below), whose sum is σ = 41646002940. Its totient is φ = 10401008400.

The previous prime is 21495425047. The next prime is 21495425069. The reversal of 21495425048 is 84052459412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21495425047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1390298 + ... + 1405673.

Almost surely, 2^21495425048 is an apocalyptic number.

It is an amenable number.

21495425048 is a deficient number, since it is larger than the sum of its proper divisors (20150577892).

21495425048 is a wasteful number, since it uses less digits than its factorization.

21495425048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2796039 (or 2796004 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 21495425048 in words is "twenty-one billion, four hundred ninety-five million, four hundred twenty-five thousand, forty-eight".