1553154051444 has 48 divisors (see below), whose sum is σ = 3851800942080. Its totient is φ = 485707851360.

The previous prime is 1553154051409. The next prime is 1553154051461. The reversal of 1553154051444 is 4441504513551.

It is a happy number.

It is a super-2 number, since 2×1553154051444² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1553154051396 and 1553154051405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33044862 + ... + 33091829.

It is an arithmetic number, because the mean of its divisors is an integer number (80245852960).

Almost surely, 2^{1553154051444} is an apocalyptic number.

It is an amenable number.

1553154051444 is an abundant number, since it is smaller than the sum of its proper divisors (2298646890636).

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

1553154051444 is a wasteful number, since it uses less digits than its factorization.

1553154051444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66136820 (or 66136818 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 42.

Adding to 1553154051444 its reverse (4441504513551), we get a palindrome (5994658564995).

The spelling of 1553154051444 in words is "one trillion, five hundred fifty-three billion, one hundred fifty-four million, fifty-one thousand, four hundred forty-four".