6781111003408 has 20 divisors (see below), whose sum is σ = 15015317222080. Its totient is φ = 2906190429984.

The previous prime is 6781111003391. The next prime is 6781111003421. The reversal of 6781111003408 is 8043001111876.

It is a super-2 number, since 2×6781111003408² (a number of 26 digits) contains 22 as substring.

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, 30272816868 + ... + 30272817091.

It is an arithmetic number, because the mean of its divisors is an integer number (750765861104).

Almost surely, 2^{6781111003408} is an apocalyptic number.

It is an amenable number.

6781111003408 is an abundant number, since it is smaller than the sum of its proper divisors (8234206218672).

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

6781111003408 is a wasteful number, since it uses less digits than its factorization.

6781111003408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60545633974 (or 60545633968 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 40.

The spelling of 6781111003408 in words is "six trillion, seven hundred eighty-one billion, one hundred eleven million, three thousand, four hundred eight".