20551044454 has 8 divisors (see below), whose sum is σ = 30876856560. Its totient is φ = 10258758936.

The previous prime is 20551044413. The next prime is 20551044463. The reversal of 20551044454 is 45444015502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 8380114 + ... + 8382565.

It is an arithmetic number, because the mean of its divisors is an integer number (3859607070).

Almost surely, 2^20551044454 is an apocalyptic number.

20551044454 is a deficient number, since it is larger than the sum of its proper divisors (10325812106).

20551044454 is a wasteful number, since it uses less digits than its factorization.

20551044454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16763294.

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 20551044454 its reverse (45444015502), we get a palindrome (65995059956).

The spelling of 20551044454 in words is "twenty billion, five hundred fifty-one million, forty-four thousand, four hundred fifty-four".