2044550213551 has 4 divisors (see below), whose sum is σ = 2073346695504. Its totient is φ = 2015753731600.

The previous prime is 2044550213527. The next prime is 2044550213567. The reversal of 2044550213551 is 1553120554402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2044550213551 - 2⁷ = 2044550213423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2044550213551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044550213851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14398240870 + ... + 14398241011.

It is an arithmetic number, because the mean of its divisors is an integer number (518336673876).

Almost surely, 2^{2044550213551} is an apocalyptic number.

2044550213551 is a deficient number, since it is larger than the sum of its proper divisors (28796481953).

2044550213551 is an equidigital number, since it uses as much as digits as its factorization.

2044550213551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28796481952.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 2044550213551 its reverse (1553120554402), we get a palindrome (3597670767953).

The spelling of 2044550213551 in words is "two trillion, forty-four billion, five hundred fifty million, two hundred thirteen thousand, five hundred fifty-one".