1121793978678 has 64 divisors (see below), whose sum is σ = 2364721661952. Its totient is φ = 354279594240.

The previous prime is 1121793978673. The next prime is 1121793978713. The reversal of 1121793978678 is 8768793971211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121793978673) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4481850 + ... + 4725522.

It is an arithmetic number, because the mean of its divisors is an integer number (36948775968).

Almost surely, 2^{1121793978678} is an apocalyptic number.

1121793978678 is an abundant number, since it is smaller than the sum of its proper divisors (1242927683274).

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

1121793978678 is a wasteful number, since it uses less digits than its factorization.

1121793978678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244229.

The product of its digits is 64012032, while the sum is 69.

The spelling of 1121793978678 in words is "one trillion, one hundred twenty-one billion, seven hundred ninety-three million, nine hundred seventy-eight thousand, six hundred seventy-eight".