6511290977 has 2 divisors, whose sum is σ = 6511290978. Its totient is φ = 6511290976.

The previous prime is 6511290959. The next prime is 6511290979. The reversal of 6511290977 is 7790921156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6419054161 + 92236816 = 80119^2 + 9604^2 .

It is a cyclic number.

It is not a de Polignac number, because 6511290977 - 2⁶ = 6511290913 is a prime.

It is a super-2 number, since 2×6511290977² = 84793820374323229058, which contains 22 as substring.

Together with 6511290979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6511290979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255645488 + 3255645489.

It is an arithmetic number, because the mean of its divisors is an integer number (3255645489).

Almost surely, 2^6511290977 is an apocalyptic number.

It is an amenable number.

6511290977 is a deficient number, since it is larger than the sum of its proper divisors (1).

6511290977 is an equidigital number, since it uses as much as digits as its factorization.

6511290977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 47.

The square root of 6511290977 is about 80692.5707670787. The cubic root of 6511290977 is about 1867.3355609449.

The spelling of 6511290977 in words is "six billion, five hundred eleven million, two hundred ninety thousand, nine hundred seventy-seven".