5513434352521 has 16 divisors (see below), whose sum is σ = 5923300996800. Its totient is φ = 5121913059648.

The previous prime is 5513434352471. The next prime is 5513434352537. The reversal of 5513434352521 is 1252534343155.

It is not a de Polignac number, because 5513434352521 - 2⁹ = 5513434352009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5513434352551) 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, 32911666 + ... + 33078763.

It is an arithmetic number, because the mean of its divisors is an integer number (370206312300).

Almost surely, 2^{5513434352521} is an apocalyptic number.

It is an amenable number.

5513434352521 is a deficient number, since it is larger than the sum of its proper divisors (409866644279).

5513434352521 is a wasteful number, since it uses less digits than its factorization.

5513434352521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65990568.

The product of its digits is 1080000, while the sum is 43.

Adding to 5513434352521 its reverse (1252534343155), we get a palindrome (6765968695676).

The spelling of 5513434352521 in words is "five trillion, five hundred thirteen billion, four hundred thirty-four million, three hundred fifty-two thousand, five hundred twenty-one".