6771377743805 has 4 divisors (see below), whose sum is σ = 8125653292572. Its totient is φ = 5417102195040.

The previous prime is 6771377743787. The next prime is 6771377743919. The reversal of 6771377743805 is 5083477731776.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2451789140761 + 4319588603044 = 1565819^2 + 2078362^2 .

It is not a de Polignac number, because 6771377743805 - 2⁸ = 6771377743549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677137774376 + ... + 677137774385.

It is an arithmetic number, because the mean of its divisors is an integer number (2031413323143).

Almost surely, 2^{6771377743805} is an apocalyptic number.

It is an amenable number.

6771377743805 is a deficient number, since it is larger than the sum of its proper divisors (1354275548767).

6771377743805 is a wasteful number, since it uses less digits than its factorization.

6771377743805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354275548766.

The product of its (nonzero) digits is 145212480, while the sum is 65.

The spelling of 6771377743805 in words is "six trillion, seven hundred seventy-one billion, three hundred seventy-seven million, seven hundred forty-three thousand, eight hundred five".