1540245523444 has 6 divisors (see below), whose sum is σ = 2695429666034. Its totient is φ = 770122761720.

The previous prime is 1540245523441. The next prime is 1540245523459. The reversal of 1540245523444 is 4443255420451.

It can be written as a sum of positive squares in only one way, i.e., 1309221100944 + 231024422500 = 1144212^2 + 480650^2 .

It is a super-3 number, since 3×1540245523444³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1540245523444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540245523441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192530690427 + ... + 192530690434.

Almost surely, 2^{1540245523444} is an apocalyptic number.

It is an amenable number.

1540245523444 is a deficient number, since it is larger than the sum of its proper divisors (1155184142590).

1540245523444 is a wasteful number, since it uses less digits than its factorization.

1540245523444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385061380865 (or 385061380863 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 43.

The spelling of 1540245523444 in words is "one trillion, five hundred forty billion, two hundred forty-five million, five hundred twenty-three thousand, four hundred forty-four".