20054887568 has 10 divisors (see below), whose sum is σ = 38856344694. Its totient is φ = 10027443776.

The previous prime is 20054887561. The next prime is 20054887597. The reversal of 20054887568 is 86578845002.

It can be written as a sum of positive squares in only one way, i.e., 19946477824 + 108409744 = 141232^2 + 10412^2 .

It is not an unprimeable number, because it can be changed into a prime (20054887561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626715221 + ... + 626715252.

Almost surely, 2^20054887568 is an apocalyptic number.

It is an amenable number.

20054887568 is a deficient number, since it is larger than the sum of its proper divisors (18801457126).

20054887568 is a wasteful number, since it uses less digits than its factorization.

20054887568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253430481 (or 1253430475 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 53.

The spelling of 20054887568 in words is "twenty billion, fifty-four million, eight hundred eighty-seven thousand, five hundred sixty-eight".