544400620453 has 16 divisors (see below), whose sum is σ = 583177500144. Its totient is φ = 506392345600.

The previous prime is 544400620417. The next prime is 544400620459. The reversal of 544400620453 is 354026004445.

It can be written as a sum of positive squares in 8 ways, for example, as 180150084 + 544220470369 = 13422^2 + 737713^2 .

It is not a de Polignac number, because 544400620453 - 2³⁷ = 406961666981 is a prime.

It is a super-2 number, since 2×544400620453² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544400620459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671751 + ... + 1240987.

It is an arithmetic number, because the mean of its divisors is an integer number (36448593759).

Almost surely, 2^544400620453 is an apocalyptic number.

It is an amenable number.

544400620453 is a deficient number, since it is larger than the sum of its proper divisors (38776879691).

544400620453 is a wasteful number, since it uses less digits than its factorization.

544400620453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569912.

The product of its (nonzero) digits is 230400, while the sum is 37.

Adding to 544400620453 its reverse (354026004445), we get a palindrome (898426624898).

The spelling of 544400620453 in words is "five hundred forty-four billion, four hundred million, six hundred twenty thousand, four hundred fifty-three".