6550809518753 has 4 divisors (see below), whose sum is σ = 6551071251648. Its totient is φ = 6550547785860.

The previous prime is 6550809518717. The next prime is 6550809518779. The reversal of 6550809518753 is 3578159080556.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6550809518753 - 2⁶ = 6550809518689 is a prime.

It is a super-2 number, since 2×6550809518753² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6550809218753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130828901 + ... + 130878962.

It is an arithmetic number, because the mean of its divisors is an integer number (1637767812912).

Almost surely, 2^{6550809518753} is an apocalyptic number.

It is an amenable number.

6550809518753 is a deficient number, since it is larger than the sum of its proper divisors (261732895).

6550809518753 is a wasteful number, since it uses less digits than its factorization.

6550809518753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261732894.

The product of its (nonzero) digits is 45360000, while the sum is 62.

The spelling of 6550809518753 in words is "six trillion, five hundred fifty billion, eight hundred nine million, five hundred eighteen thousand, seven hundred fifty-three".