6854388862511 has 2 divisors, whose sum is σ = 6854388862512. Its totient is φ = 6854388862510.

The previous prime is 6854388862459. The next prime is 6854388862523. The reversal of 6854388862511 is 1152688834586.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6854388862511 - 2²² = 6854384668207 is a prime.

It is a super-2 number, since 2×6854388862511² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6854388862571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3427194431255 + 3427194431256.

It is an arithmetic number, because the mean of its divisors is an integer number (3427194431256).

Almost surely, 2^{6854388862511} is an apocalyptic number.

6854388862511 is a deficient number, since it is larger than the sum of its proper divisors (1).

6854388862511 is an equidigital number, since it uses as much as digits as its factorization.

6854388862511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88473600, while the sum is 65.

The spelling of 6854388862511 in words is "six trillion, eight hundred fifty-four billion, three hundred eighty-eight million, eight hundred sixty-two thousand, five hundred eleven".