19355220708864 has 80 divisors (see below), whose sum is σ = 53805409840512. Its totient is φ = 6171229779968.

The previous prime is 19355220708799. The next prime is 19355220708907. The reversal of 19355220708864 is 46880702255391.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19355220708798 and 19355220708807.

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, 273900654 + ... + 273971309.

It is a 1-persistent number, because it is pandigital, but 2⋅19355220708864 = 38710441417728 is not.

Almost surely, 2^{19355220708864} is an apocalyptic number.

It is an amenable number.

19355220708864 is an abundant number, since it is smaller than the sum of its proper divisors (34450189131648).

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

19355220708864 is an equidigital number, since it uses as much as digits as its factorization.

19355220708864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547872007 (or 547871991 counting only the distinct ones).

The product of its (nonzero) digits is 29030400, while the sum is 60.

The spelling of 19355220708864 in words is "nineteen trillion, three hundred fifty-five billion, two hundred twenty million, seven hundred eight thousand, eight hundred sixty-four".