6519522229849 has 6 divisors (see below), whose sum is σ = 6674664999786. Its totient is φ = 6367905432000.

The previous prime is 6519522229837. The next prime is 6519522229859. The reversal of 6519522229849 is 9489222259156.

It can be written as a sum of positive squares in only one way, i.e., 6447064357449 + 72457872400 = 2539107^2 + 269180^2 .

It is not a de Polignac number, because 6519522229849 - 2¹³ = 6519522221657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6519522229859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1762984152 + ... + 1762987849.

It is an arithmetic number, because the mean of its divisors is an integer number (1112444166631).

Almost surely, 2^{6519522229849} is an apocalyptic number.

It is an amenable number.

6519522229849 is a deficient number, since it is larger than the sum of its proper divisors (155142769937).

6519522229849 is an equidigital number, since it uses as much as digits as its factorization.

6519522229849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525972087 (or 3525972044 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 64.

The spelling of 6519522229849 in words is "six trillion, five hundred nineteen billion, five hundred twenty-two million, two hundred twenty-nine thousand, eight hundred forty-nine".