20593194648 has 64 divisors (see below), whose sum is σ = 55458207840. Its totient is φ = 6334654464.

The previous prime is 20593194637. The next prime is 20593194659. The reversal of 20593194648 is 84649139502.

It is an interprime number because it is at equal distance from previous prime (20593194637) and next prime (20593194659).

It is a self number, because there is not a number n which added to its sum of digits gives 20593194648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1626390 + ... + 1639002.

Almost surely, 2^20593194648 is an apocalyptic number.

It is an amenable number.

20593194648 is an abundant number, since it is smaller than the sum of its proper divisors (34865013192).

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

20593194648 is a wasteful number, since it uses less digits than its factorization.

20593194648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17868 (or 17864 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 20593194648 in words is "twenty billion, five hundred ninety-three million, one hundred ninety-four thousand, six hundred forty-eight".