21214026550044 has 18 divisors (see below), whose sum is σ = 53624344890480. Its totient is φ = 7071342183336.

The previous prime is 21214026550037. The next prime is 21214026550063. The reversal of 21214026550044 is 44005562041212.

21214026550044 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 40 + 26 + 550 + 0 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 589278515279 = 21214026550044 / (2 + 1 + 2 + 1 + 4 + 0 + 2 + 6 + 5 + 5 + 0 + 0 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 21214026549990 and 21214026550008.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 294639257604 + ... + 294639257675.

Almost surely, 2^{21214026550044} is an apocalyptic number.

It is an amenable number.

21214026550044 is an abundant number, since it is smaller than the sum of its proper divisors (32410318340436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21214026550044 is a wasteful number, since it uses less digits than its factorization.

21214026550044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589278515289 (or 589278515284 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 21214026550044 its reverse (44005562041212), we get a palindrome (65219588591256).

The spelling of 21214026550044 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, five hundred fifty thousand, forty-four".