5211543105440 has 72 divisors (see below), whose sum is σ = 14322437234532. Its totient is φ = 1786814776320.

The previous prime is 5211543105421. The next prime is 5211543105473. The reversal of 5211543105440 is 445013451125.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4716315637264 + 495227468176 = 2171708^2 + 703724^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 5211543105440.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 332360981 + ... + 332376660.

Almost surely, 2^{5211543105440} is an apocalyptic number.

It is an amenable number.

5211543105440 is an abundant number, since it is smaller than the sum of its proper divisors (9110894129092).

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

5211543105440 is a wasteful number, since it uses less digits than its factorization.

5211543105440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664737670 (or 664737655 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

Adding to 5211543105440 its reverse (445013451125), we get a palindrome (5656556556565).

The spelling of 5211543105440 in words is "five trillion, two hundred eleven billion, five hundred forty-three million, one hundred five thousand, four hundred forty".