6511404012259 has 12 divisors (see below), whose sum is σ = 6932714892400. Its totient is φ = 6114420263808.

The previous prime is 6511404012221. The next prime is 6511404012307. The reversal of 6511404012259 is 9522104041156.

It is not a de Polignac number, because 6511404012259 - 2¹¹ = 6511404010211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6511404012059) 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 11 ways as a sum of consecutive naturals, for example, 25534644 + ... + 25788385.

Almost surely, 2^{6511404012259} is an apocalyptic number.

6511404012259 is a deficient number, since it is larger than the sum of its proper divisors (421310880141).

6511404012259 is a wasteful number, since it uses less digits than its factorization.

6511404012259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51323502 (or 51323485 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 6511404012259 in words is "six trillion, five hundred eleven billion, four hundred four million, twelve thousand, two hundred fifty-nine".