54491019446 has 4 divisors (see below), whose sum is σ = 81736529172. Its totient is φ = 27245509722.

The previous prime is 54491019413. The next prime is 54491019487. The reversal of 54491019446 is 64491019445.

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

It is a self number, because there is not a number n which added to its sum of digits gives 54491019446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13622754860 + ... + 13622754863.

It is an arithmetic number, because the mean of its divisors is an integer number (20434132293).

Almost surely, 2^54491019446 is an apocalyptic number.

54491019446 is a deficient number, since it is larger than the sum of its proper divisors (27245509726).

54491019446 is a wasteful number, since it uses less digits than its factorization.

54491019446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27245509725.

The product of its (nonzero) digits is 622080, while the sum is 47.

Subtracting 54491019446 from its reverse (64491019445), we obtain a palindrome (9999999999).

The spelling of 54491019446 in words is "fifty-four billion, four hundred ninety-one million, nineteen thousand, four hundred forty-six".