19473168681 has 48 divisors (see below), whose sum is σ = 28947110400. Its totient is φ = 12609717120.

The previous prime is 19473168667. The next prime is 19473168691. The reversal of 19473168681 is 18686137491.

19473168681 is a `hidden beast` number, since 1 + 9 + 473 + 16 + 86 + 81 = 666.

It is not a de Polignac number, because 19473168681 - 2¹⁷ = 19473037609 is a prime.

It is a super-2 number, since 2×19473168681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19473168601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25723755 + ... + 25724511.

It is an arithmetic number, because the mean of its divisors is an integer number (603064800).

Almost surely, 2^19473168681 is an apocalyptic number.

It is an amenable number.

19473168681 is a deficient number, since it is larger than the sum of its proper divisors (9473941719).

19473168681 is a wasteful number, since it uses less digits than its factorization.

19473168681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1283 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 19473168681 in words is "nineteen billion, four hundred seventy-three million, one hundred sixty-eight thousand, six hundred eighty-one".