544155551444 has 6 divisors (see below), whose sum is σ = 952272215034. Its totient is φ = 272077775720.

The previous prime is 544155551441. The next prime is 544155551447. The reversal of 544155551444 is 444155551445.

It is an interprime number because it is at equal distance from previous prime (544155551441) and next prime (544155551447).

It can be written as a sum of positive squares in only one way, i.e., 544071462544 + 84088900 = 737612^2 + 9170^2 .

It is a super-2 number, since 2×544155551444² (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 (544155551441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68019443927 + ... + 68019443934.

It is an arithmetic number, because the mean of its divisors is an integer number (158712035839).

Almost surely, 2^544155551444 is an apocalyptic number.

It is an amenable number.

544155551444 is a deficient number, since it is larger than the sum of its proper divisors (408116663590).

544155551444 is a wasteful number, since it uses less digits than its factorization.

544155551444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136038887865 (or 136038887863 counting only the distinct ones).

The product of its digits is 3200000, while the sum is 47.

Subtracting from 544155551444 its reverse (444155551445), we obtain a palindrome (99999999999).

The spelling of 544155551444 in words is "five hundred forty-four billion, one hundred fifty-five million, five hundred fifty-one thousand, four hundred forty-four".