6777389895544 has 64 divisors (see below), whose sum is σ = 13060851480000. Its totient is φ = 3295741363200.

The previous prime is 6777389895439. The next prime is 6777389895571. The reversal of 6777389895544 is 4455989837776.

It is a super-2 number, since 2×6777389895544² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22547844 + ... + 22846444.

It is an arithmetic number, because the mean of its divisors is an integer number (204075804375).

Almost surely, 2^{6777389895544} is an apocalyptic number.

It is an amenable number.

6777389895544 is a deficient number, since it is larger than the sum of its proper divisors (6283461584456).

6777389895544 is a wasteful number, since it uses less digits than its factorization.

6777389895544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299128 (or 299124 counting only the distinct ones).

The product of its digits is 12802406400, while the sum is 82.

The spelling of 6777389895544 in words is "six trillion, seven hundred seventy-seven billion, three hundred eighty-nine million, eight hundred ninety-five thousand, five hundred forty-four".