19475328827808 has 480 divisors, whose sum is σ = 69758139838464. Its totient is φ = 5209201248768.

The previous prime is 19475328827723. The next prime is 19475328827821. The reversal of 19475328827808 is 80872882357491.

19475328827808 is a `hidden beast` number, since 1 + 9 + 4 + 7 + 532 + 8 + 8 + 2 + 7 + 80 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 19117191 + ... + 20110137.

Almost surely, 2^{19475328827808} is an apocalyptic number.

19475328827808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19475328827808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34879069919232).

19475328827808 is an abundant number, since it is smaller than the sum of its proper divisors (50282811010656).

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

19475328827808 is a wasteful number, since it uses less digits than its factorization.

19475328827808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993046 (or 993029 counting only the distinct ones).

The product of its (nonzero) digits is 433520640, while the sum is 72.

The spelling of 19475328827808 in words is "nineteen trillion, four hundred seventy-five billion, three hundred twenty-eight million, eight hundred twenty-seven thousand, eight hundred eight".