19518673551059 has 16 divisors (see below), whose sum is σ = 19735872805440. Its totient is φ = 19302177398400.

The previous prime is 19518673551043. The next prime is 19518673551067. The reversal of 19518673551059 is 95015537681591.

It is a cyclic number.

It is not a de Polignac number, because 19518673551059 - 2⁴ = 19518673551043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19518673550986 and 19518673551004.

It is not an unprimeable number, because it can be changed into a prime (19518673551859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539902634 + ... + 539938784.

It is an arithmetic number, because the mean of its divisors is an integer number (1233492050340).

Almost surely, 2^{19518673551059} is an apocalyptic number.

19518673551059 is a deficient number, since it is larger than the sum of its proper divisors (217199254381).

19518673551059 is a wasteful number, since it uses less digits than its factorization.

19518673551059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45710.

The product of its (nonzero) digits is 51030000, while the sum is 65.

The spelling of 19518673551059 in words is "nineteen trillion, five hundred eighteen billion, six hundred seventy-three million, five hundred fifty-one thousand, fifty-nine".