6511140657787 has 2 divisors, whose sum is σ = 6511140657788. Its totient is φ = 6511140657786.

The previous prime is 6511140657781. The next prime is 6511140657823. The reversal of 6511140657787 is 7877560411156.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6511140657787 is a prime.

It is not a weakly prime, because it can be changed into another prime (6511140657781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255570328893 + 3255570328894.

It is an arithmetic number, because the mean of its divisors is an integer number (3255570328894).

Almost surely, 2^{6511140657787} is an apocalyptic number.

6511140657787 is a deficient number, since it is larger than the sum of its proper divisors (1).

6511140657787 is an equidigital number, since it uses as much as digits as its factorization.

6511140657787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9878400, while the sum is 58.

The spelling of 6511140657787 in words is "six trillion, five hundred eleven billion, one hundred forty million, six hundred fifty-seven thousand, seven hundred eighty-seven".