6765801878772 has 18 divisors (see below), whose sum is σ = 17102443638098. Its totient is φ = 2255267292912.

The previous prime is 6765801878749. The next prime is 6765801878791. The reversal of 6765801878772 is 2778781085676.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6765013729296 + 788149476 = 2600964^2 + 28074^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 6765801878772.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93969470503 + ... + 93969470574.

Almost surely, 2^{6765801878772} is an apocalyptic number.

It is an amenable number.

6765801878772 is an abundant number, since it is smaller than the sum of its proper divisors (10336641759326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6765801878772 is a wasteful number, since it uses less digits than its factorization.

6765801878772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187938941087 (or 187938941082 counting only the distinct ones).

The product of its (nonzero) digits is 442552320, while the sum is 72.

The spelling of 6765801878772 in words is "six trillion, seven hundred sixty-five billion, eight hundred one million, eight hundred seventy-eight thousand, seven hundred seventy-two".