3778408042786 has 8 divisors (see below), whose sum is σ = 6103582223004. Its totient is φ = 1743880635120.

The previous prime is 3778408042753. The next prime is 3778408042853. The reversal of 3778408042786 is 6872408048773.

It can be written as a sum of positive squares in 2 ways, for example, as 3705605750025 + 72802292761 = 1924995^2 + 269819^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72661693105 + ... + 72661693156.

Almost surely, 2^{3778408042786} is an apocalyptic number.

3778408042786 is a deficient number, since it is larger than the sum of its proper divisors (2325174180218).

3778408042786 is a wasteful number, since it uses less digits than its factorization.

3778408042786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145323386276.

The product of its (nonzero) digits is 101154816, while the sum is 64.

The spelling of 3778408042786 in words is "three trillion, seven hundred seventy-eight billion, four hundred eight million, forty-two thousand, seven hundred eighty-six".