19479988540996 has 27 divisors (see below), whose sum is σ = 34171226588317. Its totient is φ = 9716836037840.

The previous prime is 19479988540981. The next prime is 19479988541017. The reversal of 19479988540996 is 69904588997491.

The square root of 19479988540996 is 4413614.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6244071406596 + 13235917134400 = 2498814^2 + 3638120^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4069349715 + ... + 4069354501.

Almost surely, 2^{19479988540996} is an apocalyptic number.

19479988540996 is the 4413614-th square number.

It is an amenable number.

19479988540996 is a deficient number, since it is larger than the sum of its proper divisors (14691238047321).

19479988540996 is an frugal number, since it uses more digits than its factorization.

19479988540996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10500 (or 5250 counting only the distinct ones).

The product of its (nonzero) digits is 12697896960, while the sum is 88.

The spelling of 19479988540996 in words is "nineteen trillion, four hundred seventy-nine billion, nine hundred eighty-eight million, five hundred forty thousand, nine hundred ninety-six".