21544554333050 has 24 divisors (see below), whose sum is σ = 45797566925856. Its totient is φ = 7386704342640.

The previous prime is 21544554333031. The next prime is 21544554333077. The reversal of 21544554333050 is 5033345544512.

It is a junction number, because it is equal to n+sod(n) for n = 21544554332992 and 21544554333010.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30777934412 + ... + 30777935111.

It is an arithmetic number, because the mean of its divisors is an integer number (1908231955244).

Almost surely, 2^{21544554333050} is an apocalyptic number.

21544554333050 is an abundant number, since it is smaller than the sum of its proper divisors (24253012592806).

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

21544554333050 is a wasteful number, since it uses less digits than its factorization.

21544554333050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61555869542 (or 61555869537 counting only the distinct ones).

The product of its (nonzero) digits is 2160000, while the sum is 44.

Adding to 21544554333050 its reverse (5033345544512), we get a palindrome (26577899877562).

The spelling of 21544554333050 in words is "twenty-one trillion, five hundred forty-four billion, five hundred fifty-four million, three hundred thirty-three thousand, fifty".