6550519749901 has 8 divisors (see below), whose sum is σ = 6605375870520. Its totient is φ = 6495765689088.

The previous prime is 6550519749899. The next prime is 6550519749919. The reversal of 6550519749901 is 1099479150556.

It can be written as a sum of positive squares in 4 ways, for example, as 19607280676 + 6530912469225 = 140026^2 + 2555565^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6550519749901 - 2¹ = 6550519749899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6550519749901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550519749401) 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 in 7 ways as a sum of consecutive naturals, for example, 25386046 + ... + 25642783.

It is an arithmetic number, because the mean of its divisors is an integer number (825671983815).

Almost surely, 2^{6550519749901} is an apocalyptic number.

It is an amenable number.

6550519749901 is a deficient number, since it is larger than the sum of its proper divisors (54856120619).

6550519749901 is a wasteful number, since it uses less digits than its factorization.

6550519749901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51029903.

The product of its (nonzero) digits is 15309000, while the sum is 61.

The spelling of 6550519749901 in words is "six trillion, five hundred fifty billion, five hundred nineteen million, seven hundred forty-nine thousand, nine hundred one".