1316420278878 has 8 divisors (see below), whose sum is σ = 2632840557768. Its totient is φ = 438806759624.

The previous prime is 1316420278871. The next prime is 1316420278883. The reversal of 1316420278878 is 8788720246131.

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

1316420278878 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316420278871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109701689901 + ... + 109701689912.

It is an arithmetic number, because the mean of its divisors is an integer number (329105069721).

Almost surely, 2^{1316420278878} is an apocalyptic number.

1316420278878 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1316420278878 is a wasteful number, since it uses less digits than its factorization.

1316420278878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219403379818.

The product of its (nonzero) digits is 7225344, while the sum is 57.

The spelling of 1316420278878 in words is "one trillion, three hundred sixteen billion, four hundred twenty million, two hundred seventy-eight thousand, eight hundred seventy-eight".