20554444253434 has 16 divisors (see below), whose sum is σ = 37946666314368. Its totient is φ = 8131428495792.

The previous prime is 20554444253401. The next prime is 20554444253449. The reversal of 20554444253434 is 43435244445502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56468253262 + ... + 56468253625.

It is an arithmetic number, because the mean of its divisors is an integer number (2371666644648).

Almost surely, 2^{20554444253434} is an apocalyptic number.

20554444253434 is a deficient number, since it is larger than the sum of its proper divisors (17392222060934).

20554444253434 is a wasteful number, since it uses less digits than its factorization.

20554444253434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112936506909.

The product of its (nonzero) digits is 18432000, while the sum is 49.

Adding to 20554444253434 its reverse (43435244445502), we get a palindrome (63989688698936).

The spelling of 20554444253434 in words is "twenty trillion, five hundred fifty-four billion, four hundred forty-four million, two hundred fifty-three thousand, four hundred thirty-four".