6801212787920 has 80 divisors (see below), whose sum is σ = 15834246543360. Its totient is φ = 2716800233472.

The previous prime is 6801212787881. The next prime is 6801212787923. The reversal of 6801212787920 is 297872121086.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6801212787923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433770641 + ... + 433786319.

It is an arithmetic number, because the mean of its divisors is an integer number (197928081792).

Almost surely, 2^{6801212787920} is an apocalyptic number.

It is an amenable number.

6801212787920 is an abundant number, since it is smaller than the sum of its proper divisors (9033033755440).

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

6801212787920 is a wasteful number, since it uses less digits than its factorization.

6801212787920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22692 (or 22686 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 53.

The spelling of 6801212787920 in words is "six trillion, eight hundred one billion, two hundred twelve million, seven hundred eighty-seven thousand, nine hundred twenty".