19428185180097 has 12 divisors (see below), whose sum is σ = 28241678954580. Its totient is φ = 12869625850848.

The previous prime is 19428185180093. The next prime is 19428185180119. The reversal of 19428185180097 is 79008158182491.

19428185180097 is a `hidden beast` number, since 1 + 9 + 4 + 28 + 1 + 8 + 518 + 0 + 0 + 97 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14402298241296 + 5025886938801 = 3795036^2 + 2241849^2 .

It is not a de Polignac number, because 19428185180097 - 2² = 19428185180093 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (19428185180093) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6874798722 + ... + 6874801547.

It is an arithmetic number, because the mean of its divisors is an integer number (2353473246215).

Almost surely, 2^{19428185180097} is an apocalyptic number.

It is an amenable number.

19428185180097 is a deficient number, since it is larger than the sum of its proper divisors (8813493774483).

19428185180097 is a wasteful number, since it uses less digits than its factorization.

19428185180097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13749600432 (or 13749600429 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 63.

The spelling of 19428185180097 in words is "nineteen trillion, four hundred twenty-eight billion, one hundred eighty-five million, one hundred eighty thousand, ninety-seven".