21554343032054 has 32 divisors (see below), whose sum is σ = 36963861600000. Its totient is φ = 9234186429600.

The previous prime is 21554343032039. The next prime is 21554343032081. The reversal of 21554343032054 is 45023034345512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507151697 + ... + 507194195.

It is an arithmetic number, because the mean of its divisors is an integer number (1155120675000).

Almost surely, 2^{21554343032054} is an apocalyptic number.

21554343032054 is a deficient number, since it is larger than the sum of its proper divisors (15409518567946).

21554343032054 is a wasteful number, since it uses less digits than its factorization.

21554343032054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54948.

The product of its (nonzero) digits is 864000, while the sum is 41.

Adding to 21554343032054 its reverse (45023034345512), we get a palindrome (66577377377566).

The spelling of 21554343032054 in words is "twenty-one trillion, five hundred fifty-four billion, three hundred forty-three million, thirty-two thousand, fifty-four".