6778889511730 has 16 divisors (see below), whose sum is σ = 13945144138560. Its totient is φ = 2324190689712.

The previous prime is 6778889511703. The next prime is 6778889511749. The reversal of 6778889511730 is 371159888776.

It is a Harshad number since it is a multiple of its sum of digits (70), and also a Moran number because the ratio is a prime number: 96841278739 = 6778889511730 / (6 + 7 + 7 + 8 + 8 + 8 + 9 + 5 + 1 + 1 + 7 + 3 + 0).

It is a self number, because there is not a number n which added to its sum of digits gives 6778889511730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48420639300 + ... + 48420639439.

It is an arithmetic number, because the mean of its divisors is an integer number (871571508660).

Almost surely, 2^{6778889511730} is an apocalyptic number.

6778889511730 is an abundant number, since it is smaller than the sum of its proper divisors (7166254626830).

6778889511730 is a wasteful number, since it uses less digits than its factorization.

6778889511730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96841278753.

The product of its (nonzero) digits is 142248960, while the sum is 70.

The spelling of 6778889511730 in words is "six trillion, seven hundred seventy-eight billion, eight hundred eighty-nine million, five hundred eleven thousand, seven hundred thirty".