6772778812020 has 96 divisors (see below), whose sum is σ = 20424719323008. Its totient is φ = 1666967081472.

The previous prime is 6772778811971. The next prime is 6772778812027. The reversal of 6772778812020 is 202188772776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6772778812027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6900807 + ... + 7820913.

It is an arithmetic number, because the mean of its divisors is an integer number (212757492948).

Almost surely, 2^{6772778812020} is an apocalyptic number.

6772778812020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6772778812020 is an abundant number, since it is smaller than the sum of its proper divisors (13651940510988).

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

6772778812020 is a wasteful number, since it uses less digits than its factorization.

6772778812020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929569 (or 929567 counting only the distinct ones).

The product of its (nonzero) digits is 7375872, while the sum is 57.

The spelling of 6772778812020 in words is "six trillion, seven hundred seventy-two billion, seven hundred seventy-eight million, eight hundred twelve thousand, twenty".