20055450554 has 4 divisors (see below), whose sum is σ = 30083175834. Its totient is φ = 10027725276.

The previous prime is 20055450529. The next prime is 20055450557. The reversal of 20055450554 is 45505455002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16338719329 + 3716731225 = 127823^2 + 60965^2 .

It is not an unprimeable number, because it can be changed into a prime (20055450557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5013862637 + ... + 5013862640.

Almost surely, 2^20055450554 is an apocalyptic number.

20055450554 is a deficient number, since it is larger than the sum of its proper divisors (10027725280).

20055450554 is a wasteful number, since it uses less digits than its factorization.

20055450554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10027725279.

The product of its (nonzero) digits is 100000, while the sum is 35.

The spelling of 20055450554 in words is "twenty billion, fifty-five million, four hundred fifty thousand, five hundred fifty-four".