6505741250501 has 4 divisors (see below), whose sum is σ = 6515350913292. Its totient is φ = 6496131587712.

The previous prime is 6505741250483. The next prime is 6505741250599. The reversal of 6505741250501 is 1050521475056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5372312730625 + 1133428519876 = 2317825^2 + 1064626^2 .

It is a cyclic number.

It is not a de Polignac number, because 6505741250501 - 2²² = 6505737056197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505741250201) 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, 4804830380 + ... + 4804831733.

It is an arithmetic number, because the mean of its divisors is an integer number (1628837728323).

Almost surely, 2^{6505741250501} is an apocalyptic number.

It is an amenable number.

6505741250501 is a deficient number, since it is larger than the sum of its proper divisors (9609662791).

6505741250501 is an equidigital number, since it uses as much as digits as its factorization.

6505741250501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609662790.

The product of its (nonzero) digits is 210000, while the sum is 41.

The spelling of 6505741250501 in words is "six trillion, five hundred five billion, seven hundred forty-one million, two hundred fifty thousand, five hundred one".