20896284648 has 16 divisors (see below), whose sum is σ = 52240711680. Its totient is φ = 6965428208.

The previous prime is 20896284593. The next prime is 20896284679. The reversal of 20896284648 is 84648269802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435339240 + ... + 435339287.

It is an arithmetic number, because the mean of its divisors is an integer number (3265044480).

Almost surely, 2^20896284648 is an apocalyptic number.

It is an amenable number.

20896284648 is an abundant number, since it is smaller than the sum of its proper divisors (31344427032).

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

20896284648 is a wasteful number, since it uses less digits than its factorization.

20896284648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870678536 (or 870678532 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 57.

The spelling of 20896284648 in words is "twenty billion, eight hundred ninety-six million, two hundred eighty-four thousand, six hundred forty-eight".