1077778777774 has 8 divisors (see below), whose sum is σ = 1616780564280. Its totient is φ = 538851923016.

The previous prime is 1077778777769. The next prime is 1077778777813. The reversal of 1077778777774 is 4777778777701.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1077778777774.

It is a congruent number.

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, 18696964 + ... + 18754519.

It is an arithmetic number, because the mean of its divisors is an integer number (202097570535).

Almost surely, 2^{1077778777774} is an apocalyptic number.

1077778777774 is a deficient number, since it is larger than the sum of its proper divisors (539001786506).

1077778777774 is a wasteful number, since it uses less digits than its factorization.

1077778777774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37465874.

The product of its (nonzero) digits is 1291315424, while the sum is 76.

The spelling of 1077778777774 in words is "one trillion, seventy-seven billion, seven hundred seventy-eight million, seven hundred seventy-seven thousand, seven hundred seventy-four".