21552103445044 has 24 divisors (see below), whose sum is σ = 38068757895168. Its totient is φ = 10675768223520.

The previous prime is 21552103445039. The next prime is 21552103445101. The reversal of 21552103445044 is 44054430125512.

It is a junction number, because it is equal to n+sod(n) for n = 21552103444988 and 21552103445006.

It is a congruent number.

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, 56402932 + ... + 56783755.

It is an arithmetic number, because the mean of its divisors is an integer number (1586198245632).

Almost surely, 2^{21552103445044} is an apocalyptic number.

It is an amenable number.

21552103445044 is a deficient number, since it is larger than the sum of its proper divisors (16516654450124).

21552103445044 is a wasteful number, since it uses less digits than its factorization.

21552103445044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113187135 (or 113187133 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 40.

The spelling of 21552103445044 in words is "twenty-one trillion, five hundred fifty-two billion, one hundred three million, four hundred forty-five thousand, forty-four".