1053544221549 has 24 divisors (see below), whose sum is σ = 1602396151200. Its totient is φ = 665181992160.

The previous prime is 1053544221533. The next prime is 1053544221617. The reversal of 1053544221549 is 9451224453501.

1053544221549 is a `hidden beast` number, since 1 + 0 + 5 + 354 + 42 + 215 + 49 = 666.

It is not a de Polignac number, because 1053544221549 - 2⁴ = 1053544221533 is a prime.

It is a super-2 number, since 2×1053544221549² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053544221529) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 459207 + ... + 1522484.

It is an arithmetic number, because the mean of its divisors is an integer number (66766506300).

Almost surely, 2^{1053544221549} is an apocalyptic number.

1053544221549 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1053544221549 is a deficient number, since it is larger than the sum of its proper divisors (548851929651).

1053544221549 is a wasteful number, since it uses less digits than its factorization.

1053544221549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984825 (or 1984822 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 1053544221549 in words is "one trillion, fifty-three billion, five hundred forty-four million, two hundred twenty-one thousand, five hundred forty-nine".