6778900561734 has 24 divisors (see below), whose sum is σ = 16785849010320. Its totient is φ = 1936828731888.

The previous prime is 6778900561721. The next prime is 6778900561777. The reversal of 6778900561734 is 4371650098776.

6778900561734 is a `hidden beast` number, since 6 + 7 + 7 + 8 + 9 + 0 + 0 + 5 + 617 + 3 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26900398929 + ... + 26900399180.

It is an arithmetic number, because the mean of its divisors is an integer number (699410375430).

Almost surely, 2^{6778900561734} is an apocalyptic number.

6778900561734 is an abundant number, since it is smaller than the sum of its proper divisors (10006948448586).

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

6778900561734 is a wasteful number, since it uses less digits than its factorization.

6778900561734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53800798124 (or 53800798121 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 63.

The spelling of 6778900561734 in words is "six trillion, seven hundred seventy-eight billion, nine hundred million, five hundred sixty-one thousand, seven hundred thirty-four".