19479040709904 has 60 divisors (see below), whose sum is σ = 57720980934396. Its totient is φ = 6111071594496.

The previous prime is 19479040709897. The next prime is 19479040709911. The reversal of 19479040709904 is 40990704097491.

19479040709904 is a `hidden beast` number, since 1 + 9 + 479 + 0 + 4 + 0 + 70 + 9 + 90 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (19479040709897) and next prime (19479040709911).

It can be written as a sum of positive squares in 2 ways, for example, as 14637051705600 + 4841989004304 = 3825840^2 + 2200452^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3978559789 + ... + 3978564684.

Almost surely, 2^{19479040709904} is an apocalyptic number.

It is an amenable number.

19479040709904 is an abundant number, since it is smaller than the sum of its proper divisors (38241940224492).

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

19479040709904 is a wasteful number, since it uses less digits than its factorization.

19479040709904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7957124504 (or 7957124495 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 63.

The spelling of 19479040709904 in words is "nineteen trillion, four hundred seventy-nine billion, forty million, seven hundred nine thousand, nine hundred four".