20864006448 has 60 divisors (see below), whose sum is σ = 54039030120. Its totient is φ = 6936595968.

The previous prime is 20864006437. The next prime is 20864006489. The reversal of 20864006448 is 84460046802.

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 11 ways as a sum of consecutive naturals, for example, 25789468 + ... + 25790276.

It is an arithmetic number, because the mean of its divisors is an integer number (900650502).

Almost surely, 2^20864006448 is an apocalyptic number.

It is an amenable number.

20864006448 is an abundant number, since it is smaller than the sum of its proper divisors (33175023672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20864006448 is an frugal number, since it uses more digits than its factorization.

20864006448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286 (or 1547 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 20864006448 in words is "twenty billion, eight hundred sixty-four million, six thousand, four hundred forty-eight".