6777801578002 has 32 divisors (see below), whose sum is σ = 12561552726912. Its totient is φ = 2670894895104.

The previous prime is 6777801577931. The next prime is 6777801578063. The reversal of 6777801578002 is 2008751087776.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72405888 + ... + 72499435.

It is an arithmetic number, because the mean of its divisors is an integer number (392548522716).

Almost surely, 2^{6777801578002} is an apocalyptic number.

6777801578002 is a deficient number, since it is larger than the sum of its proper divisors (5783751148910).

6777801578002 is a wasteful number, since it uses less digits than its factorization.

6777801578002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144905602.

The product of its (nonzero) digits is 9219840, while the sum is 58.

The spelling of 6777801578002 in words is "six trillion, seven hundred seventy-seven billion, eight hundred one million, five hundred seventy-eight thousand, two".