21447253096 has 16 divisors (see below), whose sum is σ = 40244387040. Its totient is φ = 10715416560.

The previous prime is 21447253081. The next prime is 21447253097. The reversal of 21447253096 is 69035274412.

It is not an unprimeable number, because it can be changed into a prime (21447253097) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1015140 + ... + 1036051.

It is an arithmetic number, because the mean of its divisors is an integer number (2515274190).

Almost surely, 2^21447253096 is an apocalyptic number.

It is an amenable number.

21447253096 is a deficient number, since it is larger than the sum of its proper divisors (18797133944).

21447253096 is a wasteful number, since it uses less digits than its factorization.

21447253096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052504 (or 2052500 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 21447253096 in words is "twenty-one billion, four hundred forty-seven million, two hundred fifty-three thousand, ninety-six".