19313400378768 has 80 divisors (see below), whose sum is σ = 49933427389440. Its totient is φ = 6432578520192.

The previous prime is 19313400378761. The next prime is 19313400378793. The reversal of 19313400378768 is 86787300431391.

It is not an unprimeable number, because it can be changed into a prime (19313400378761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864393805 + ... + 864416147.

It is an arithmetic number, because the mean of its divisors is an integer number (624167842368).

Almost surely, 2^{19313400378768} is an apocalyptic number.

It is an amenable number.

19313400378768 is an abundant number, since it is smaller than the sum of its proper divisors (30620027010672).

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

19313400378768 is a wasteful number, since it uses less digits than its factorization.

19313400378768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36156 (or 36150 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 60.

The spelling of 19313400378768 in words is "nineteen trillion, three hundred thirteen billion, four hundred million, three hundred seventy-eight thousand, seven hundred sixty-eight".