19378141717840 has 40 divisors (see below), whose sum is σ = 45305878854240. Its totient is φ = 7707953571456.

The previous prime is 19378141717829. The next prime is 19378141717873. The reversal of 19378141717840 is 4871714187391.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676596774 + ... + 676625413.

It is an arithmetic number, because the mean of its divisors is an integer number (1132646971356).

Almost surely, 2^{19378141717840} is an apocalyptic number.

19378141717840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19378141717840 is an abundant number, since it is smaller than the sum of its proper divisors (25927737136400).

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

19378141717840 is a wasteful number, since it uses less digits than its factorization.

19378141717840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353222379 (or 1353222373 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 61.

The spelling of 19378141717840 in words is "nineteen trillion, three hundred seventy-eight billion, one hundred forty-one million, seven hundred seventeen thousand, eight hundred forty".