6520986619711 has 2 divisors, whose sum is σ = 6520986619712. Its totient is φ = 6520986619710.

The previous prime is 6520986619687. The next prime is 6520986619813. The reversal of 6520986619711 is 1179166890256.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6520986619711 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6520986619711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6520986617711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3260493309855 + 3260493309856.

It is an arithmetic number, because the mean of its divisors is an integer number (3260493309856).

Almost surely, 2^{6520986619711} is an apocalyptic number.

6520986619711 is a deficient number, since it is larger than the sum of its proper divisors (1).

6520986619711 is an equidigital number, since it uses as much as digits as its factorization.

6520986619711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 61.

The spelling of 6520986619711 in words is "six trillion, five hundred twenty billion, nine hundred eighty-six million, six hundred nineteen thousand, seven hundred eleven".